Article
Polymer Science
Langheng Pan, Tao Zhan, Yue Zhang, Junyu Li, Yifan Wu, Zhicai He, Ping Cai, Chunhui Duan, Fei Huang, Yong Cao
Summary: This study reports wide bandgap polymers based on 5,6-difluorobenzo[c][1,2,5]oxadiazole (ffBX) for non-fullerene organic solar cells. The solubility, solid state packing, and bulk-heterojunction morphology of the polymers are finely tuned through side chain engineering. Encouragingly, a decent efficiency of 14.25% is achieved with the polymer Oc25 blended with the non-fullerene acceptor Y6.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Shuai Zhang, Mian Cai, Chenyu Shang, Fuzhen Bi, Fan Feng, Zhengkun Du, Cheng Sun, Yonghai Li, Xichang Bao
Summary: All-polymer solar cells (APSCs) with superior stability and mechanical flexibility have attracted increasing attention. However, the power conversion efficiencies (PCEs) of APSCs are limited by efficient polymer donors (P(D)s). This study highlights the significance of intramolecular charge transfer and quinoid resonance effects in regulating the bandgaps of donor-acceptor conjugated materials, and introduces a novel polymer donor PBPD based on phenyl/pyridyl fused phenanthridine (PD) moiety.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Polymer Science
Yiping Guo, Zeyang Li, Mengzhen Sha, Ping Deng, Xinyu Lin, Jun Li, Liang Zhang, Hang Yin, Hongbing Zhan
Summary: A simple wide-bandgap conjugated polymer based on indoloquinoxaline unit has been synthesized and shown to be a promising building unit for designing polymer donor materials for polymer solar cells. Polymer solar cells based on this polymer and popular acceptor Y6 blend have demonstrated a preliminarily optimized power conversion efficiency of 6.4%.
Article
Chemistry, Physical
Thavamani Gokulnath, Jungmin Choi, Ho-Yeol Park, Kyungmin Sung, Yeongju Do, Hyungjin Park, Junyoung Kim, Saripally Sudhaker Reddy, Jehan Kim, Myungkwan Song, Jinhwan Yoon, Sung-Ho Jin
Summary: This study utilized a novel pi-conjugated polymer SiCl-BDT as the third component in TOSCs, achieving a high solar cell PCE of 17.09% and further improving it to 17.40% through interface engineering. The use of a passivated electron transporting layer and a pi-conjugated polymer as the third component shows promising potential in overcoming the low PCEs of organic solar cells.
Article
Chemistry, Physical
Zhihui Liao, Dingqin Hu, Hua Tang, Peihao Huang, Ranbir Singh, Sein Chung, Kilwon Cho, Manish Kumar, Licheng Hou, Qianqian Chen, Weiyang Yu, Haiyan Chen, Ke Yang, Zhipeng Kan, Feng Liu, Zeyun Xiao, Gang Li, Shirong Lu
Summary: Researchers synthesized a series of terpolymer donors with varying fractions of ester-substituted thiazole (E-Tz) units using random ternary copolymerization. They found that fine-tuning the E-Tz content can optimize the energy levels, electrostatic potentials, molecular aggregation, miscibility, and morphology, resulting in improved performance parameters for photovoltaic devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Metallurgy & Metallurgical Engineering
Zhe Li, Hong-gang Chen, Jun Yuan, Jie Zou, Jing Li, Hui-lan Guan, Ying-ping Zou
Summary: The synthesis of a new polymer acceptor PY9-T was achieved, which showed high power conversion efficiency when blended with the wide bandgap polymer donor PBDB-T. The polymer acceptor also exhibited good thermal stability.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Chemistry, Physical
Lening Shen, Tao Zhu, Xinwen Zhang, Keven Gong, He Wang, Xiong Gong
Summary: This study presents high-performance perovskite solar cells (PSCs) based on a composite of perovskite and a low optical gap conjugated polymer. The composite film exhibits enhanced charge carrier mobility, larger crystal sizes, and suppressed non-radiation charge carrier recombination. Additionally, a photo-induced charge transfer occurs within the composite film, leading to improved power conversion efficiency (PCE) of the PSCs. The un-encapsulated PSCs also demonstrate enhanced stability and reduced photocurrent hysteresis compared to those based on pristine perovskite films.
Article
Biochemistry & Molecular Biology
Abdullah, Sei-Jin Lee, Jong Bae Park, Yang Soo Kim, Hyung-Shik Shin, Ashique Kotta, Qamar Tabrez Siddiqui, Youn-Sik Lee, Hyung-Kee Seo
Summary: A linear-shaped small organic molecule, MBTR, synthesized and analyzed, efficiently tuned the thermal, absorption, and emission characteristics to enhance the molecular packing and aggregation behaviors in the solid state. The optimized MBTR:PC71BM fullerene-based devices showed a maximum PCE of 7.05%, and with the addition of 3% DIO, the PCE improved to 8.76%, demonstrating the effective approach of introducing suitable donor/acceptor groups in enhancing the photovoltaic performances of organic solar cells.
Article
Chemistry, Multidisciplinary
Qunping Fan, Ruijie Ma, Tao Liu, Jianwei Yu, Yiqun Xiao, Wenyan Su, Guilong Cai, Yuxiang Li, Wenhong Peng, Tao Guo, Zhenghui Luo, Huiliang Sun, Lintao Hou, Weiguo Zhu, Xinhui Lu, Feng Gao, Ellen Moons, Donghong Yu, He Yan, Ergang Wang
Summary: A novel non-fully conjugated polymer acceptor PFY-2TS with a low bandgap was developed and showed improved performance in all-polymer solar cells with a PCE of 12.31% and reduced energy loss. This study demonstrated that non-fully conjugated polymers as a new class of acceptor materials are very promising for the development of high-performance all-polymer solar cells.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Polymer Science
Xin Wang, Zongtao Wang, Mingwei Li, Lijun Tu, Ke Wang, Dengping Xiao, Qiang Guo, Ming Zhou, Xianwen Wei, Yongqiang Shi, Erjun Zhou
Summary: The molecular design of a wide-bandgap polymer donor is crucial to achieve high-performance organic photovoltaic devices. In this study, a new dibenzo-fused quinoxalineimide (BPQI) was successfully synthesized as an electron-deficient building block for constructing donor-acceptor (D-A) type polymers. The study also discovered a non-fullerene acceptor (NFA) material, Y6, with excellent electrochemical and optical properties and high efficiency. By combining the BPQI polymer with the Y6 acceptor, the resulting devices exhibited good photovoltaic performance.
Article
Materials Science, Multidisciplinary
Byoungwook Park, Hyemin Bae, Jong-Woon Ha, Changjin Lee, Jihoon Lee, Yuchan Heo, BongSoo Kim, Sung Cheol Yoon, Hyosung Choi, Seo-Jin Ko
Summary: Semi-transparent organic solar cells have potential in aesthetic and space-saving solar energy systems. This study focuses on the development of low bandgap donor polymers for efficient charge generation from NIR light and propagation of visible light. The BD-Cl:Y6 OSCs with a metal oxide/metal/metal oxide transparent electrode achieved a high average visible transmittance and power conversion efficiency, contributing to the enhancement of semi-transparent organic solar cells potential.
ORGANIC ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Siying Li, Xin Yuan, Qilin Zhang, Bin Li, Yuxiang Li, Jianguo Sun, Yifeng Feng, Xuning Zhang, Zang Wu, Huan Wei, Mei Wang, Yuanyuan Hu, Yuan Zhang, Han Young Woo, Jianyu Yuan, Wanli Ma
Summary: Two narrow-bandgap block conjugated polymers, PBDB-T-b-PIDIC2T and PBDB-T-b-PTY6, are designed and synthesized for single-component organic solar cells. These polymers exhibit better light harvesting, improved efficiency, low energy loss, and excellent stability in SCOSCs. Their structural relationship with binary counterparts provides a framework for further exploring molecular features impacting photovoltaic performance.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Physical
Tahir Imran, Sajid Rauf, Hasan Raza, Liaquat Aziz, Rui Chen, Sanwan Liu, Jianan Wang, Muhammad Ashfaq Ahmad, Shasha Zhang, Yiqiang Zhang, Zonghao Liu, Wei Chen
Summary: This review provides an overview of lead halide-based perovskite solar cells (PSCs) with a focus on tin-based alternatives. The motivation for studying single-junction methylammonium (MA), bromide-free, and tin-based perovskites is discussed, along with strategies to improve film quality and stability. The review concludes with a discussion of the limitations and future prospects for tin-based PSCs.
ADVANCED ENERGY MATERIALS
(2022)
Article
Polymer Science
Zesheng Zhang, Feilong Pan, Mei Luo, Dong Yuan, Haizhen Liu, Qin Liu, Zhuhao Wu, Lianjie Zhang, Junwu Chen
Summary: In this work, a WBG polymer donor PDTfBT-4T based on DTfBT and 4T was synthesized for non-fullerene PSCs. The active layer of PDTfBT-4T:Y14 showed high efficiency with an open-circuit voltage of 0.83 V, a short-circuit current density of 25.42 mA cm-2, and a fill factor of 72.0%, resulting in a PCE of 15.19%. These results suggest promising application of DTfBT for efficient NFA based PSCs.
Article
Materials Science, Multidisciplinary
Sanghoon Lee, Hyun-Seock Yang, Suhee Song, Woojin Lee, Won-Ki Lee, Sung Heum Park, Jin Young Kim, Youngeup Jin
Summary: 2-Fluorophenazine, as an acceptor unit, was synthesized for the preparation of conjugated polymers used in organic solar cells. The introduction of a phenazine moiety containing fused phenyl groups is crucial for reducing the energy levels of the Highest Occupied Molecular Orbitals (HOMOs) in conjugated polymers, leading to improved photovoltaic performance.
Article
Energy & Fuels
Yuzhang Wang, Qing Zhang, Yixing Li, Ming He, Shilie Weng
Summary: The water-air ratio, aftercooler effectiveness and regenerator effectiveness are key factors affecting the humidification performance and efficiency of the HAT cycle.
Article
Polymer Science
Bing-Yong Liu, Cong Xie, Cong-Wu Ge, Meng-Meng Cui, Wei Yang, Zai-Fei Ma, Xi-Ke Gao, Yin-Hua Zhou, Qing Zhang
Summary: In this study, a benzobisthiazole polymer with resonance-assisted hydrogen bonds (RAHBs) was synthesized for applications in organic field-effect transistors and polymer solar cells. The polymer exhibited deeper HOMO/LUMO energy levels and demonstrated good hole mobility and power conversion efficiency in device measurements.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Thermodynamics
Qing Zhang, Yuzhang Wang, Jiangjun Jiang, Shilie Weng, Xiuling Cao
Summary: The study focuses on the interaction of air humidification, heat recovery, and system performance in the HAT cycle to understand the effects of interactive variables on efficiency. The analysis reveals that water-air ratio, aftercooler effectiveness, and recuperator effectiveness significantly impact the cycle efficiency, with different effects under varying turbine inlet temperature and pressure ratio conditions. Thorough numerical analysis shows the importance of considering interactive variables for enhancing efficiency and specific work output in the HAT cycle.
Article
Chemistry, Physical
Jiewen Shi, Hanyang Gao, Guoxin Hu, Qing Zhang
Summary: The research proposes a confined interfacial assembly method to combine controlled Li2Ti3O7 building blocks and silicon nanoparticles, achieving superior performance by providing rapid 3D interpenetrating electron/Li+ pathways and high stable cycle performance.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Applied
Bingyong Liu, Jing Li, Wei Yang, Hui Yan, Xike Gao, Qing Zhang
Summary: BODIPY analogues based on naphthalene mono-imides were synthesized and studied for their molecular structures, conformational features, and stacking states. The chelation of boron difluoride was found to affect the optical and redox properties of the dyes, leading to modifications in the electronic structure of the molecules. Field-effect transistors devices using the BODIPY analogues exhibited n-type behavior with electron mobility up to 0.10 cm(2) V-1 s(-1).
Article
Engineering, Electrical & Electronic
Ruo-Nan Qian, Jun-Guo Lu, Qing-Hao Zhang
Summary: This brief investigates the maximal perturbation bounds of fractional-order linear time-invariant parameter-dependent systems with the commensurate order alpha is an element of(0,1). Sufficient and necessary conditions for the maximal perturbation bounds of such parameter-dependent systems with single and multiple parameters are given using the Kronecker sum. Numerical examples are presented to verify the validity of the proposed methods in this brief.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Engineering, Electrical & Electronic
Xiao-Chuang Jin, Jun-Guo Lu, Qing-Hao Zhang
Summary: The paper investigates the stability and stabilization problem of linear fractional-order time-delay systems. By introducing a free matrix, the systems are transformed into delay-free systems interconnected with uncertainties. New stability and stabilization criteria based on the small gain theorem are derived, expressed as linear matrix inequalities and computationally efficient. The proposed criteria are less conservative than existing ones, as shown in two numerical examples.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Materials Science, Multidisciplinary
Yumeng Zhang, Qing Zhang, Yabo Wang, Xiaodong Wang
Summary: With the increase in strength of stainless steel, the use of stainless steel for structural components has also increased, making welding problems more important. This study characterized the microstructure of gas tungsten arc welding (GTAW) welded duplex stainless steel (DSS) using scanning electron microscope (SEM), electron backscatter diffraction (EBSD), and nanoindentation. The results showed that the welded DSS had high yield strength, ultimate tensile strength, and sufficient plasticity. The investigation of the microstructure origin related to the mechanical properties of the welded joint may provide insights for improving the welding process.
MATERIALS CHARACTERIZATION
(2023)
Article
Polymer Science
Wei Yang, Dayong Zhang, Junsheng Yu, Qing Zhang
Summary: Thiophene-pyrazine-thiophene building blocks with carboxamide or carbamate substituents were synthesized and compared in terms of crystal structures. The carboxamide substituent in the building block formed intermolecular hydrogen bonds, resulting in a twisted conformation and herringbone packing. The carbamate substituent formed intramolecular resonance-assisted hydrogen bonds (RAHBs), leading to a co-planar structure, extended pi-conjugation, and tight lamellar arrangement. Conjugated polymers based on these building blocks showed significant differences in optical, redox, and photovoltaic properties, with PC-BDT2 exhibiting a higher power conversion efficiency (PCE) of 7.9% compared to PI-BDT with a PCE of 0.1% due to the presence of intramolecular hydrogen bonds.
Article
Chemistry, Multidisciplinary
Qing Zhang, Fengqing Wang, Ruoyu Wang, Junlan Liu, Yupengxue Ma, Xiaoru Qin, Xiaoxia Zhong
Summary: Fluorescence mechanism of near-infrared (NIR) fluorescent carbon dots (CDs) is still uncertain and controversial. This study demonstrates that the protonation of amino groups increases the particle surface potential and disperses bulk sediments into nano-scale CDs. Moreover, the protonation of pyridinic nitrogen structures induces NIR fluorescence emission on CDs by narrowing the gap distance for photon transition. This research provides insights into activating CDs reaction sediments and triggering NIR emission, offering potential for developing CDs with ideal optical properties.
Article
Engineering, Biomedical
Feng Yan, Ji-Hee Ha, Yuyang Yan, Sam B. B. Ton, Chen Wang, Bornface Mutembei, Zaid A. A. Alhajeri, Aubrey F. F. McNiel, Andrew J. J. Keddissi, Qinghao Zhang, Muralidharan Jayaraman, Danny N. N. Dhanasekaran, Qinggong Tang
Summary: This study utilized a noninvasive optical imaging tool to monitor the growth and therapeutic responses of multicellular tumor spheroids (MCTs) in vivo, evaluating the potential applications of three FDA-approved drugs for ovarian cancer therapy.
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2023)
Article
Automation & Control Systems
Qing-Hao Zhang, Jun-Guo Lu
Summary: This paper considers the admissibility and robust stabilization issues of fractional-order singular systems with polytopic uncertainties. Novel admissibility conditions for nominal fractional-order singular systems are proposed. Robust admissibility conditions for fractional-order singular systems with polytopic uncertainties are given based on the admissibility conditions for nominal fractional-order singular systems. Methods of designing static output feedback controllers that make the uncertain fractional-order singular systems robustly admissible are obtained. The results are illustrated with three examples.
ASIAN JOURNAL OF CONTROL
(2023)
Article
Computer Science, Theory & Methods
Qing-Hao Zhang, Jun-Guo Lu
Summary: This paper investigates the admissibility and robust stabilization of fractional-order singular discrete systems with interval uncertainties. The authors derive novel admissibility conditions for nominal fractional-order singular discrete systems and propose a more tractable condition for the controller design. They also address the state feedback controller synthesis and demonstrate the efficiency of the proposed method through numerical simulation examples.
INTERNATIONAL JOURNAL OF GENERAL SYSTEMS
(2023)
Article
Engineering, Biomedical
Qing Zhang, Jing Zhang, Jiajun Yuan, Huajie Huang, Yuhang Zhang, Baoqin Zhang, Gaomei Lv, Shuzhu Lin, Na Wang, Xin Liu, Mingyu Tang, Yahua Wang, Hui Ma, Lu Liu, Shuhua Yuan, Hongyuan Zhou, Jian Zhao, Yongfu Li, Yong Yin, Liebin Zhao, Guoxing Wang, Yong Lian
Summary: By developing the first open-access paediatric respiratory sound database, SPRSound, and using a custom-made sound label annotation software, SoundAnn, we established a team of 11 experienced paediatric physicians to provide accurate labels for the dataset. Through investigating different feature extraction methods and machine learning classifiers, we achieved good classification performance at the event level and record level.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Article
Materials Science, Multidisciplinary
Bo Zhang, Congwu Ge, Cong Xie, Kaiwen Lin, Wei Yang, Bingyong Liu, Xike Gao, Yinhua Zhou, Qing Zhang
Summary: A new building block TTPY has been synthesized for pi-conjugated polymers, which can form resonance-assisted hydrogen bonds (RAHBs) and weak intramolecular noncovalent interactions. The X-ray diffraction analysis revealed a rigid co-planar structure, extended pi-conjugated and a tight lamella arrangement in the solid state. Two conjugated polymers based on TTPY exhibited high field-effect mobility and power conversion efficiency in field-effect transistors and polymer solar cells, respectively.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Energy & Fuels
Shahriyar Safat Dipta, Md Habibur Rahaman, Walia Binte Tarique, Ashraful Hossain Howlader, Ayush Pratik, John A. Stride, Ashraf Uddin
Summary: Implementing a double-sided passivation approach can enhance the performance of n-i-p structured PSCs and improve the stability and photovoltaic properties of the cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Daniel Ourinson, Andreas Brand, Andreas Lorenz, Marwan Dhamrin, Sebastian Tepner, Michael Linse, Nathalie Goettlicher, Kosuke Tsuji, Jonas D. Huyeng, Florian Clement
Summary: This work presents two approaches to reduce the amount of silver on the rear side of M2-sized industrial iTOPCon solar cells. The Cu-based approach shows promise with similar power conversion efficiency compared to the conventional approach, while the Al-based approach exhibits some limitations but demonstrates the potential of such type of contact for iTOPCon solar cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Abasifreke Ebong, Donald Intal, Sandra Huneycutt, Thad Druffel, Ruvini Dharmadasa, Kevin Elmer, Apolo Nambo
Summary: This study demonstrates the successful metallization of a PERC silicon solar cell using screen-printable copper (Cu) paste. The Cu paste contains antioxidant additives and diffusion inhibitors to prevent oxidation and diffusion of Cu. The Cu-printed cells achieved an efficiency of 19% and showed no Cu diffusion after characterization tests. The long-term stability and effectiveness of the Cu diffusion barrier were also confirmed.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Senami Zogbo, Wilfried Favre, Olivier Bonino, Marie-Estelle Gueunier-Farret
Summary: Measuring specific contact resistivity (pc) is crucial for interface engineering in high efficiency solar cells. The Transfer Length Method (TLM) is commonly used for evaluating layer sheet resistance (Rsheet) and pc, but it is not suitable for metal/Transparent Conductive Oxide (TCO) interface evaluation in silicon heterojunction (SHJ) cells. This study investigates the parameters that restrict current confinement within the TCO, including mid-gap trap density (Dit) at the a-Si:H/c-Si interface and the activation energy (Ea = Ec - EF) variation of a-Si:H contact layers.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Jean-Baptiste Charpentier, Philippe Voarino, Julien Gaume
Summary: The phenomenon of ribbon lengthening in PV modules exposed to thermal cycling is not well explained in the literature. In this study, a three layers model is proposed to explain this effect, and the predictions of the model are validated through finite element method simulations and experiments. The results show that the model predictions are consistent with the indirect measurements, but not with the direct measurements. Additionally, it is inferred that the encapsulant plays a role after the solder failure.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Jean-Baptiste Charpentier, Philippe Voarino, Julien Gaume
Summary: This study investigates the problematic ribbon lengthening observed in PV modules exposed to high amplitude thermal cycling. A simplified system model is proposed and accurate predictions are obtained using the Finite Element Method. The results show that the thickness of the encapsulant has a substantial impact on the lengthening of the ribbons.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
S. Catalan-Gomez, E. Martinez Castellano, M. Schwarz, M. Montes Bajo, L. Dorado Vargas, A. Gonzalo, A. Redondo-Cubero, A. Gallego Carro, A. Hierro, J. M. Ulloa
Summary: This study investigates the use of core-shell gallium nanoparticles as functional light scatterers on solar cells. By optimizing the nanoparticle size, the short-circuit current of the solar cells is significantly improved. The underlying physical mechanism is studied through optical measurements and simulations, and a method to reduce the plasmonic effect of the nanoparticles is demonstrated.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
M. Gamel, G. Lopez, A. M. Medrano, A. Jimenez, A. Datas, M. Garin, I. Martin
Summary: In this study, a highly reflective ohmic contact to p-type c-Ge material is demonstrated, which can improve the efficiency of thermophotovoltaic devices. The experimental results show that this contact can simultaneously meet the requirements of good back surface passivation, low electrical resistivity, and high reflectivity. Moreover, simulations suggest that implementing these back contacts has the potential to achieve conversion efficiencies comparable to high-efficiency c-Ge TPV cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Hongyang Wei, Qing Xu, Dongchu Chen, Min Chen, Menglei Chang, Xiufang Ye
Summary: This study prepared solar selective absorption films based on anodic aluminum oxide (AAO) photonic crystals using a unique electrodeposition method. The Co-Ag electrodeposited film exhibited superior solar selective absorption properties and thermal stability.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Ankit Kumar, Ankit Chauhan, Jordi Llobet, Helder Fonseca, Patricia C. Sousa, Carlos Calaza, Gil Shalev
Summary: This study found that decorating subwavelength arrays with SiO2 quasi-nanolenses (qNL arrays) can enhance the absorption of the solar spectrum. Optical absorption mechanisms in qNL arrays were investigated using near-field scanning optical microscopy (NSOM), revealing that the enhancement is a result of the combination of effective antireflection coating, increased optical interactions between adjacent dielectrics for elevated light trapping, and strong light concentration due to the presence of qNLs.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
S. Pingel, T. Wenzel, N. Goettlicher, M. Linse, L. Folcarelli, J. Schube, S. Hoffmann, S. Tepner, Y. C. Lau, J. Huyeng, A. Lorenz, F. Clement
Summary: This study demonstrates the potential to reduce silver consumption in highly efficient SHJ cells through fine-line screen printing using low temperature paste with various screens. The results show that using finer mesh allows for narrower grid fingers and lower resistance, leading to improved cell efficiency. Simulation results indicate that module wire configuration is crucial for reducing silver consumption.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Xibo He, Jun Qiu, Wei Wang, Yicheng Hou, Yong Shuai
Summary: This paper proposes a novel phase change material with high thermal conductivity and stability for fast photo-thermal conversion and storage. The experimental results demonstrate excellent durability and stability of the phase change material, with good performance in thermal conductivity and thermal storage efficiency.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Qingyuan Liu, Lin Wang, Zheng Liu, Guohua Liu
Summary: A new evaporating structure consisting of liquid marble with tunable nanowire array is proposed to enhance solar evaporation. The experiments show that the liquid marble with nanowire array exhibits outstanding evaporation performance, which has significant implications for seawater desalination or wastewater treatment.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Hao Liu, Qiming Liu, Jinpei Liu, Yonggang Zhao, Yingjie Yu, Yue An, Ganghui Wei, Yanzheng Li, Yujun Fu, Junshuai Li, Deyan He
Summary: Moisture in the air is identified as the main cause of performance degradation in organic-inorganic hybrid solar cells. Exposure to air leads to the growth of thin oxide layer on the interface and the formation of silver sulfide, increasing the series resistance and decreasing the fill factor, thus degrading the cell performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
E. Blanco, P. Martin, M. Dominguez, P. Fernandez-Palacios, I. Lombardero, C. Sanchez-Perez, I. Garcia, C. Algora, M. Gabas
Summary: This study addresses the lack of optical parameters for p-type Ge wafers by determining the complex refractive indices of commercial Ge wafers with varying doping levels. The obtained data successfully reproduces the critical points associated with interband transitions and absorption features below the bandgap. The refractive indices were validated through experimental measurements and solar cell simulations.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
