Article
Physics, Condensed Matter
Rui Li, Mingsheng Xu, Chengxin Wang, Shangda Qu, Kaiju Shi, Changfu Li, Xiangang Xu, Ziwu Ji
Summary: Experimental results show that different growth temperatures of InGaN/GaN multiple quantum wells can affect the structure and performance of LEDs, reducing the growth temperature can alter the structure and enhance the luminous efficiency.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Multidisciplinary Sciences
Mikolaj Grabowski, Ewa Grzanka, Szymon Grzanka, Artur Lachowski, Julita Smalc-Koziorowska, Robert Czernecki, Roman Hrytsak, Joanna Moneta, Grzegorz Gawlik, Andrzej Turos, Mike Leszczynski
Summary: This experiment provides experimental evidence that point defects, most likely gallium vacancies, induce decomposition of InGaN quantum wells at high temperatures. The study found that point defects play an important role in the decomposition of InGaN at high temperatures by comparing samples grown on unimplanted and implanted GaN substrates.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Liwen Cheng, Zhenwei Li, Jiayi Zhang, Xingyu Lin, Da Yang, Haitao Chen, Shudong Wu, Shun Yao
Summary: An InGaN laser diode with InGaN-GaN-InGaN delta barriers demonstrates lower turn-on current, higher laser power, and higher slope efficiency compared to those with InGaN or conventional GaN barriers. These improvements are attributed to modified energy bands that enhance carrier injection within the active region.
Article
Chemistry, Multidisciplinary
Mi-Hyang Sheen, Yong-Hee Lee, Jongjin Jang, Jongwoo Baek, Okhyun Nam, Cheol-Woong Yang, Young-Woon Kim
Summary: Surface undulation occurred during the growth of InGaN/GaN multi-quantum wells on a semi-polar m-plane (1-100) sapphire substrate. Two distinct facets were formed in the embedded MQWs, parallel to (11 (2) over bar2) and (01 (1) over bar 11), respectively. The structural and luminescence characteristics of these facets were investigated, and it was found that the indium incorporation differed between the two facets.
Review
Physics, Applied
D. J. Binks, P. Dawson, R. A. Oliver, D. J. Wallis
Summary: LEDs based on hexagonal InGaN/GaN quantum wells are widely used for lighting applications, but their performance is limited for green and amber emission and at high drive currents. Growing quantum wells in the cubic phase is a promising alternative due to its reduced bandgap and absence of strong polarization fields. The major structural defects in cubic GaN are stacking faults, which affect the optical properties and can propagate into active layers.
APPLIED PHYSICS REVIEWS
(2022)
Article
Chemistry, Physical
Xiao-Wei Wang, Feng Liang, De-Gang Zhao, Ping Chen, Zong-Shun Liu, Jing Yang
Summary: The study found that surface roughness, V-defects, and residual impurities in the InGaN lower waveguide layer significantly impact the performance of GaN-based laser diodes. A smooth interface/surface is crucial for reducing threshold current and resistance of the laser, while reducing V-defects and impurities in the waveguide layer can improve current injection efficiency and decrease series resistance of the lasers.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Artur Lachowski, Ewa Grzanka, Robert Czernecki, Mikolaj Grabowski, Szymon Grzanka, Mike Leszczynski, Julita Smalc-Koziorowska
Summary: This study aims to determine the influence of vacancy concentration in different layers surrounding GaN/InGaN quantum wells (QWs) on their thermal stability. Experimental results showed that the vacancy concentration in the GaN layer below the QWs at high temperature has a clear effect on the degradation process, while the vacancy concentration in the layer above the active region has no effect. Magnesium doping can reduce the vacancy concentration and improve the thermal stability of the QWs.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Liyuan Yu, Jianhua Hu, Yuchen Ma, Lixia Zhao
Summary: The effects of 1.5 MeV electron irradiation on the structural, electrical, and optical properties of InGaN/GaN multiple quantum wells were investigated. It was found that at lower electron fluencies, the indium content in the quantum wells decreased due to ionization of valence electrons, while at higher fluencies, there was an increase in indium concentration due to the appearance of indium-rich clusters. Additionally, the activation energy of the irradiated quantum wells increased compared to the as-grown ones.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Applied
Nicola Roccato, Francesco Piva, Carlo De Santi, Riccardo Brescancin, Kalparupa Mukherjee, Matteo Buffolo, Camille Haller, Jean-Francois Carlin, Nicolas Grandjean, Marco Vallone, Alberto Tibaldi, Francesco Bertazzi, Michele Goano, Giovanni Verzellesi, Gaudenzio Meneghesso, Enrico Zanoni, Matteo Meneghini
Summary: This paper investigates and models the impact of defects on the electrical characteristics of InGaN-based LEDs as a function of the quantum well (QW) thickness. The study demonstrates that the density of defects scales with the increasing thickness of the InGaN QW, affecting the current-voltage characteristics significantly.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Xiaowei Wang, Feng Liang, De-gang Zhao, Zongshun Liu, Jianjun Zhu, Liyuan Peng, Jing Yang
Summary: The study found that increasing pressure can accelerate the incorporation of indium atoms while maintaining the surface morphology of the InGaN quantum well layer; decreasing the TMIn flow can improve the homogeneity and quality of the InGaN layer, while increasing pressure to keep the indium content unchanged.
APPLIED SURFACE SCIENCE
(2021)
Article
Automation & Control Systems
Juntian Qu, Renjie Wang, Peng Pan, Linghao Du, Zetian Mi, Yu Sun, Xinyu Liu
Summary: Nanomaterials possess superior properties and are suitable for various device applications. Nanomanipulation techniques under scanning electron microscopy (SEM) have enabled the testing of mechanical and electrical properties of nanomaterials. However, the seamless integration of mechanical, electrical, and optical testing techniques inside an SEM for multiphysical characterization of nanomaterials is still unexplored. In this work, a nanomanipulation system with integrated micro-photoluminescence setup is reported, and the effect of mechanical compression on the optoelectronic property of nanomaterials is revealed.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2023)
Review
Chemistry, Analytical
Youwei Zhang, Ruiqiang Xu, Qiushi Kang, Xiaoli Zhang, Zi-hui Zhang
Summary: This paper reviews the reasons for the low external quantum efficiency (EQE) of micro LEDs and introduces optimization techniques to improve the EQE of micro LEDs.
Article
Physics, Applied
Wenbo Li, Yuxuan Zhang, Zhaoying Chen, Hongping Zhao, Steven A. Ringel, Aaron R. Arehart
Summary: This study compares defect incorporation in laser-assisted MOCVD-grown GaN with conventional MOCVD GaN. No new traps were observed in the laser-assisted sample, and trap concentrations were similar to the optimal low-growth-rate sample. The increase in trap concentrations in the laser-assisted sample is primarily due to gallium vacancy and carbon-related traps.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Mandar A. Kulkarni, Hyesu Ryu, Hak-Jong Choi, Ameer Abdullah, Hamza Thaalbi, Fawad Tariq, Sang Hyun Lee, Hyungjun Lim, Sang-Wan Ryu
Summary: Gallium nitride (GaN) based low-dimensional optoelectronic devices, particularly InGaN/GaN multi-quantum wells (MQWs) based on nanostructured GaN, have potential applications in display technology due to their tunable bandgap and small size. Researchers are exploring the growth of MQWs on non-polar planes to mitigate polarization-induced effects and improve emission characteristics and device performance.
Article
Physics, Applied
Alessandro Caria, Marco Nicoletto, Carlo De Santi, Matteo Buffolo, Xuanqi Huang, Houqiang Fu, Hong Chen, Yuji Zhao, Gaudenzio Meneghesso, Enrico Zanoni, Matteo Meneghini
Summary: In this paper, a model based on material parameters and equations is proposed to describe the quantum efficiency of InGaN/GaN MQW solar cells. The study demonstrates that the proposed model can effectively reproduce the spectral response of the cells. Additionally, it is found that the p-GaN layer absorbs radiation, but the carriers generated in this region do not significantly contribute to device current.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yaokai Li, Yuan Guo, Zeng Chen, Lingling Zhan, Chengliang He, Zhaozhao Bi, Nannan Yao, Shuixing Li, Guanqing Zhou, Yuanping Yi, Yang (Michael) Yang, Haiming Zhu, Wei Ma, Feng Gao, Fengling Zhang, Lijian Zuo, Hongzheng Chen
Summary: This study systematically investigates the working mechanism of ternary blend organic photovoltaics based on non-fullerene acceptors (NFAs). Molecular dynamics simulations and morphology characterization reveal that the addition of larger band gap and highly miscible NFAs improves composition-dependent band gap and charge recombination, leading to enhanced power conversion efficiency.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Lama Khalil, Debora Pierucci, Emilio Velez-Fort, Jose Avila, Celine Vergnaud, Pavel Dudin, Fabrice Oehler, Julien Chaste, Matthieu Jamet, Emmanuel Lhuillier, Marco Pala, Abdelkarim Ouerghi
Summary: This study visualizes the presence of a flat band near the Fermi level in the van der Waals WSe2/MoSe2 heterobilayer and confirms the coexistence of different domains with arbitrary twist angles. The strong interlayer hybridization effects are observed, which are further confirmed by complementary micro-Raman spectroscopy measurements.
Article
Chemistry, Physical
Bin Zhang, Johan Klarbring, Fuxiang Ji, Sergei Simak, Igor A. Abrikosov, Feng Gao, Galyna Yu Rudko, Weimin M. Chen, Irina A. Buyanova
Summary: Phonon-phonon and electron/exciton-phonon coupling are found to play a vital role in the thermal, electronic, and optical properties of metal halide perovskites. Our study focuses on the evaluation of phonon anharmonicity and coupling between electronic and vibrational excitations in the novel material, Cs2NaFeCl6, through Raman measurements and theoretical calculations. The results highlight the significance of phonon-phonon and electron-phonon interactions in the electronic properties of Cs2NaFeCl6.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Jihene Zribi, Debora Pierucci, Federico Bisti, Biyuan Zheng, Jose Avila, Lama Khalil, Cyrine Ernandes, Julien Chaste, Fabrice Oehler, Marco Pala, Thomas Maroutian, Ilka Hermes, Emmanuel Lhuillier, Anlian Pan, Abdelkarim Ouerghi
Summary: By characterizing the electronic properties of a single layer WS1.4Se0.6 alloy, researchers have discovered its unique anisotropic properties. The alloy exhibits a giant unidirectional Rashba spin splitting and in-plane polarization, which could have wide-ranging applications in future electronic, piezoelectric, and spintronic devices.
Article
Chemistry, Multidisciplinary
Jiajun Qin, Yang Tang, Jia Zhang, Tangyao Shen, Max Karlsson, Tiankai Zhang, Weidong Cai, Lei Shi, Wei-Xin Ni, Feng Gao
Summary: In this study, we evaluate the threshold carrier density of optically pumped lasers and find that the carrier cooling process in perovskites is slower than previously assumed. However, we observe that lower energy photon excitation speeds up the carrier cooling process and facilitates efficient carrier accumulation. By extrapolating the optical pumping threshold to band edge excitation, we obtain a critical threshold carrier density one order of magnitude lower than conventional estimates.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Xabier Rodriguez-Martinez, Paula Hartnagel, Sergi Riera-Galindo, Gulzada Beket, Thomas Osterberg, Feng Gao, Thomas Kirchartz, Olle Inganas
Summary: Non-fullerene acceptors have revolutionized indoor organic photovoltaics with high power conversion efficiencies, but transferring this performance to larger-scale prototyping remains challenging. The PM6:IO4Cl blend, a successful indoor OPV photoactive layer, is investigated for its industrial potential, and the thick and semitransparent devices are fabricated in air. Anomalous current-voltage characteristics are observed, with the cathode side generally outperforming the anode side due to a dead layer at the PAL/anode contact interface. Symmetric J-V curves and improved light utilization efficiency are achieved by making the PALs thin enough. Certain all-polymer and polymer:fullerene blends are identified as suitable candidates for thick device up-scaling, and ternary blends show potential in mitigating electrical asymmetry.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Li Wan, Rui Zhang, Eunkyung Cho, Hongxiang Li, Veaceslav Coropceanu, Jean-Luc Bredas, Feng Gao
Summary: We propose a widely applicable strategy to fill the spectral gap of circularly polarized light (CPL) detection in the near-infrared (NIR) region by directly inducing chiroptical activity in planar non-fullerene acceptors. This strategy is found to be effective in a wide series of state-of-the-art non-fullerene acceptor families, including ITIC5, o-IDTBR6, and Y6 analogues.
Article
Nanoscience & Nanotechnology
Anis Chiout, Cleophanie Brochard-Richard, Laetitia Marty, Nedjma Bendiab, Meng-Qiang Zhao, A. T. Charlie Johnson, Fabrice Oehler, Abdelkarim Ouerghi, Julien Chaste
Summary: A study has found that the frequency of nanomechanical resonators can be effectively tuned at the nanoscale using a suspended MoS2 membrane heated by the Joule effect, with a significantly larger modulation amplitude compared to other approaches. This research is crucial for fully harnessing the potential of two-dimensional materials.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Editorial Material
Chemistry, Multidisciplinary
Feng Gao, Elsa Reichmanis
Review
Nanoscience & Nanotechnology
Baodan Zhao, Maria Vasilopoulou, Azhar Fakharuddin, Feng Gao, Abd. Rashid Bin Mohd Yusoff, Richard H. Friend, Dawei Di
Summary: Perovskite light-emitting diodes (LEDs) have shown great potential for display and lighting applications with external quantum efficiencies exceeding 20% for various colors. However, the majority of internally generated photons are trapped in the devices and lose energy through lossy channels, suggesting the need for effective light management strategies. By analyzing the intrinsic optical properties of perovskite materials and the extrinsic properties related to device structures, this Review highlights the possibility of substantially exceeding the conventional limits of planar organic LED devices and suggests new approaches for achieving ultrahigh efficiencies in perovskite LEDs.
NATURE NANOTECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Bin Zhang, Yuqing Huang, Fuxiang Ji, Xiaohe Miao, Feng Gao, Weimin M. Chen, Irina A. Buyanova
Summary: We report the first observation of second harmonic generation (SHG) from halide double perovskite single crystals. The SHG efficiency of these materials with centrosymmetric crystalline structures is strongly dependent on the measurement temperature, increasing by up to 3 orders of magnitude at low temperatures under light illumination. The enhancement is attributed to the build-up of a light-induced electric field within the near-surface region.
Article
Physics, Multidisciplinary
Joakim Argillander, Alvaro Alarcon, Chunxiong Bao, Chaoyang Kuang, Gustavo Lima, Feng Gao, Guilherme B. Xavier
Summary: The authors demonstrate a certified quantum random number generator using a metal-halide perovskite light emitting diode. This new technology has the potential to revolutionize optical communication and lighting devices, and also has applications in quantum technologies.
COMMUNICATIONS PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Gulzada Beket, Anton Zubayer, Qilun Zhang, Jochen Stahn, Fredrik Eriksson, Mats Fahlman, Thomas Osterberg, Jonas Bergqvist, Feng Gao
Summary: Harvesting indoor light for electronic devices has become an application scenario for emerging photovoltaics, especially organic photovoltaics (OPVs). This study investigates the impact of fullerene-based acceptor interlayer on the performance of laminated OPVs for indoor applications. Incorporating insulating organic components into fullerene interlayers improves energy level alignment and reduces voltage loss across the interface.
Article
Chemistry, Multidisciplinary
Lama Khalil, Cyrine Ernandes, Jose Avila, Adrien Rousseau, Pavel Dudin, Nikolai D. Zhigadlo, Guillaume Cassabois, Bernard Gil, Fabrice Oehler, Julien Chaste, Abdelkarim Ouerghi
Summary: In this study, we demonstrate the stable growth of p-type hexagonal boron nitride (h-BN) by using Mg atoms as substitutional impurities. Our experiments involving micro-Raman spectroscopy, nano-ARPES, and KPFM show that Mg-doping significantly alters the electronic properties of h-BN. The Mg dopants shift the valence band maximum and result in a reduced Fermi level difference between pristine and Mg-doped h-BN crystals. This research establishes Mg-doping as a promising method for high-quality p-type doped h-BN films, which are crucial for applications in deep ultraviolet LEDs and wide bandgap optoelectronic devices.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Mengyun Chen, Tiankai Zhang, Anna Elsukova, Zhangjun Hu, Rui Zhang, Yonghong Wang, Xianjie Liu, Xiaoke Liu, Feng Gao
Summary: Stable CsPbI3 nanoplatelets with lower surface-area-to-volume ratio and improved spectral stability are synthesized by accelerating the crystallization process using kinetic control.
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)
