Article
Energy & Fuels
Prabudeva Ramu, Arto Aho, Ville Polojarvi, Timo Aho, Antti Tukiainen, Teemu Hakkarainen, Jarno Reuna, Jari Lyytikainen, Roosa Hytonen, Mircea Guina
Summary: This study reports on an epitaxial lift-off (ELO) process using an internal sacrificial stressor layer (ISSL) and a surface polymer stressor layer, which enables the development of flexible and lightweight thin-film III-V solar cell devices. The combined action of these layers enhances the lateral etching rate and promotes a more controllable release process.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Multidisciplinary Sciences
Yusuke Oteki, Yoshitaka Okada
Summary: In this study, we investigated the impact of light trapping on the performance of InAs/GaAs quantum dot (QD) solar cells. By matching the positions of the QD layers with the intensity peaks of a Fabry-Perot resonance, we achieved enhanced QD absorption near 1192 nm in a thin-film QD solar cell with a backside mirror. Our results demonstrate a ten-fold increase in the external quantum efficiency at a specific FP resonance wavelength compared to solar cells without FP resonance by optimizing the positioning of the QD layers.
Article
Mathematics, Applied
E. Seim, A. Kohler, R. Lukacs, M. A. Brandsrud, E. S. Marstein, E. Olsen, R. Blumel
Summary: The research team maximizes absorption by trapping light rays in chaotic scattering systems and proposes the use of an autocorrelation function to assess the average path length of rays as a possible experimental method to verify light-trapping efficiency.
Article
Materials Science, Multidisciplinary
H. Rahimi, M. J. Karimi, S. Ghajarpour-Nobandegani
Summary: This study investigates the absorption efficiency of a thin-film solar cell composed of metallic nanowires and semiconductors, with results showing over 90% absorption using a rectangular-nanowire system and semi-circular nanowire cross-section in specific wavelength ranges. The high absorption in the visible region could potentially benefit the design of plasmonic solar cells.
Article
Chemistry, Multidisciplinary
Seungwan Woo, Geunhwan Ryu, Taesoo Kim, Namgi Hong, Jae-Hoon Han, Rafael Jumar Chu, Jinho Bae, Jihyun Kim, In-Hwan Lee, Deahwan Jung, Won Jun Choi
Summary: We demonstrate the feasibility of growing GaAs thin film solar cells epitaxially on a Si substrate using a metal wafer bonding and epitaxial lift-off process. The use of a virtual substrate and optimization of materials and processes on the GaAs/Si virtual substrate enables the realization of high-efficiency solar cells.
APPLIED SCIENCES-BASEL
(2022)
Article
Optics
Mohammad Ali Shameli, Leila Yousefi
Summary: A new method utilizing multi-scale photonic topological insulators to enhance sunlight absorption in thin film solar cells is proposed in this paper, and full wave numerical analysis demonstrates significant improvement in short circuit current of the solar cell.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Geun Woo Baek, Seung Gi Seo, Donghyo Hahm, Yeon Jun Kim, Kyunghwan Kim, Taesoo Lee, Jaeyoul Kim, Wan Ki Bae, Sung Hun Jin, Jeonghun Kwak
Summary: In this study, efficient and stable AM-QLEDs for next-generation displays are demonstrated by comparing different configurations of QLEDs and TFTs. A 5x5 AM-QLED display array controlled using SWNT TFTs is successfully demonstrated, contributing to the development of advanced AM-QLED displays.
ADVANCED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Tadas Paulauskas, Viktorija Strazdiene, Benjaminas Sebeka, Andrius Maneikis, Mindaugas Kamarauskas, Andrejus Geizutis, Martynas Skapas, Arturas Suchodolskis, Mantas Drazdys, Vaidas Pacebutas, Arunas Krotkus
Summary: A new epitaxial GaAs substrate lift-off (ELO) technique is presented in this study, allowing for the protection of AlGaAs layers against the etching effect of HF acid. This method is applied in the preparation and analysis of thin film GaAs solar cells, demonstrating that the photovoltaic characteristics are identical to those prepared by substrate etching. This approach can also be used in other III-V semiconductor optoelectronic devices, such as solid-state lasers and single-photon emitters with AlGaAs-based Bragg reflectors.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Hongen Li, Yizhi Hu, Hao Wang, Qi Tao, Yonggang Zhu, Yue Yang
Summary: A composite light-trapping structure is proposed in this study, utilizing a double-layer antireflection coating on the upper surface and Ag hemispheres on the substrate to enhance full-spectrum light absorption. The light-trapping effects remain efficient over different thicknesses of the active layer, with the short-circuit current density (J(sc)) of thin-film solar cells approaching the theoretical limit with the optimized structure.
Article
Materials Science, Ceramics
How-Wei Ke, Ian Yi-Yu Bu, Bo-Jun Chen, Chun-Chih Hu, Yaw-Shyan Fu, Tzung-Fang Guo
Summary: This article proposes a method for synthesizing perovskite quantum dot films that is low-cost, suitable for rapid mass production, and results in high transmittance and excellent luminous characteristics. By controlling the deposition time and rotation speed, a monolayer quantum dot film can be achieved, with excellent optical and electrical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Mahta Majdi, Mehdi Eskandari, Davood Fathi
Summary: The investigation of tandem solar cells has shown a leap in recent years, with the use of complementary bandgap energies leading to enhanced light absorption and power conversion efficiency. A new hole transport material has been utilized in a numerical study of a perovskite/quantum dot solar cell, showing promising results with improved performance. By employing pyramidal texturing and series connection of different absorbing layers, the overall PCE of the tandem solar cell has been increased, demonstrating the great potential of nanostructure design in enhancing solar cell efficiency.
Article
Chemistry, Multidisciplinary
Woo-Lim Jeong, Junsung Jang, Jihun Kim, Soo-Kyung Joo, Mun-Do Park, Hoe-Min Kwak, Jaeyoung Baik, Hyeong-Jin Kim, Jin Hyeok Kim, Dong-Seon Lee
Summary: By depositing quantum dot-based luminescent down-shifting layers on CZTSSe solar cells, the UV response and short-circuit current of the cells were enhanced, resulting in a maximum conversion efficiency of 7.3%. This study also demonstrated the experimental application of LDS layers for CZTSSe solar cells for the first time.
Article
Engineering, Electrical & Electronic
Tauseef Ahmed, Syed Sadique Anwer Askari, Mukul Kumar Das
Summary: An efficient light management technique is proposed for microcrystalline silicon based thin film solar cells. The proposed technique includes a TCAD model that considers optical phenomena like light scattering and diffusive reflection, as well as electrical phenomena like carrier transport. The study compares the performance of different nano-textured absorber layers, finding that a grating-type back-textured layer provides the best results. By optimizing the depth and period of the grating, the power conversion efficiency is maximized, resulting in a 3.975% improvement compared to random front and back nano-textured cells.
IEEE TRANSACTIONS ON NANOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Bo Wei, Xu Mao, Wen Liu, Chunxue Ji, Guiqiang Yang, Yidi Bao, Xiaoling Chen, Fuhua Yang, Xiaodong Wang
Summary: Light trapping technology can enhance the performance of solar cells by increasing light absorption and reducing material thickness and cost. Surface plasmons have shown great potential in improving solar cell efficiency through light scattering and coupling effects. This review summarizes recent research on surface plasmon-enhanced GaAs thin-film solar cells, which are widely used photovoltaic devices. Various SP nanostructures employed by different research groups are introduced, and their impact on light trapping is discussed. Key parameters and prospective trends for performance enhancement are also summarized.
Article
Green & Sustainable Science & Technology
Li Zhu, Jiqiang Zhang, Di Wang, Ruohong Wang, Yong Sun, Cuigu Wu
Summary: An optimal design method of micro-lens light trapping structure for thin film solar cells applied to building integrated photovoltaic systems is proposed in this paper. The study investigates the photoelectric performance of Copper Indium Gallium Selenium (CIGS) thin film solar cells with micro-lens light trapping structure under different scenarios, showing that the V-shaped micro-lens light trapping structure performs the best in capturing light.
Article
Optics
S. C. Burd, J. -P. Penttinen, P. -Y. Hou, H. M. Knaack, S. Ranta, M. Maki, E. Kantola, M. Guina, D. H. Slichter, D. Leibfried, A. C. Wilson
Summary: This article presents two systems based on vertical-external-cavity surface-emitting lasers (VECSELs) that can generate ultraviolet laser light at 235 and 313 nm wavelengths, suitable for quantum information processing with trapped beryllium ions. Each system includes a compact, single-frequency, continuous-wave VECSEL that produces high-power near-infrared light and can be tuned over tens of nanometers. One system produces 2.4 W of power at 940 nm, which is converted to 54 mW of 235 nm light for photoionization of neutral beryllium atoms. The other system uses a gain mirror based on GaInNAs/GaAs quantum wells, extending the wavelength above 1200 nm with manageable strain in the GaAs lattice, and generates 1.6 W at 1252 nm, which is converted to 41 mW of 313 nm light for laser cooling of trapped 9Be+ ions and quantum state preparation and detection. The 313 nm system is also suitable for implementing high-fidelity quantum gates.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Omer Donmez, Mustafa Aydin, Selman Mutlu, Janne Puustinen, Joonas Hilska, Mircea Guina, Ayse Erol
Summary: We present experimental and analytical results on hot electron transport in as-grown and annealed n-type modulation-doped Al0.15Ga0.85As/GaAs0.96Bi0.4 quantum well structures. The drift mobility and velocity of the annealed sample are lower due to the increased 2D electron density caused by annealing. Hot electron transport occurs in parallel mode, and inter-valley transfer dominates at higher electric fields.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Optics
Nouman Zia, Samu-pekka Ojanen, Jukka Viheriala, Eero Koivusalo, Joonas Hilska, Heidi Tuorila, Mircea Guina
Summary: This paper presents a hybrid laser that combines GaSb-based semiconductor gain chips with Si3N4 photonic integrated circuits. The low-loss features of Si3N4 waveguides are utilized to integrate a tunable Si3N4 Vernier mirror. The laser exhibits a maximum output power of 15 mW and a tuning range of about 90 nm at room temperature. The low-loss performance of various Si3N4 building blocks for photonic integrated circuits is also confirmed.
Article
Energy & Fuels
Andrea Scaccabarozzi, Stefano Vichi, Sergio Bietti, Federico Cesura, Timo Aho, Mircea Guina, Federica Cappelluti, Maurizio Acciarri, Stefano Sanguinetti
Summary: We investigate the impact of quantum dot aspect ratio on the sub-gap absorption properties of GaAs/AlGaAs quantum dot intermediate band solar cells. Using droplet epitaxy, we grow AlGaAs solar cells with GaAs quantum dots, which allows for strain-free nanostructures with lattice matched materials. By varying the dot aspect ratio, we can tune the energy levels of the intermediate band, thereby altering the sub-gap absorption spectrum and charge carrier extraction. The tradeoff between thermal and optical extraction is crucial for the proper functioning of the intermediate band solar cells, with the photonic extraction mechanism from the quantum dots becoming dominant at room temperature.
PROGRESS IN PHOTOVOLTAICS
(2023)
Editorial Material
Optics
Junjie Yang, Mingchu Tang, Siming Chen, Huiyun Liu
Summary: The realization of on-chip light sources enables the complete integration of Si-based photonic integrated circuits (PICs).
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Xingchao Zhang, Yunkun Yang, Hongxi Zhou, Xianchao Liu, Rui Pan, He Yu, Jun Gou, Zhiming Wu, Jiang Wu, Faxian Xiu, Yi Shi, Jun Wang
Summary: This study developed an ultra-low-noise-level PD linear array based on a 3D Dirac semimetal (Cd1-xZnx)(3)As-2/Sb2Se3 heterojunction. The PD exhibited outstanding photodetection capacity from the visible to mid-infrared region, with high SNR, peak specific detectivity, and response speed. It also demonstrated long-term stability and uniformity, showing great potential for advanced optoelectronic applications.
SCIENCE CHINA-MATERIALS
(2023)
Article
Physics, Applied
Reuben Amedalor, Petri Karvinen, Henri Pesonen, Jari Turunen, Tapio Niemi, Subhajit Bej
Summary: This study demonstrates the coexistence of resonant modes with weak dispersion and a Q-factor of approximately 1000 in diffraction gratings, along with the modes with well-known linear dispersion. The dispersion characteristics of these modes can be adjusted by controlling the polarization of the incoming light, allowing for strong or almost flat dispersion. A semi-analytical model is introduced to explain the underlying physics of these observations, and theoretical conjecture is supported by full-wave numerical simulations and experiments. The findings presented in this study will benefit applications reliant on resonances in free-space-coupled geometries.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Daqian Guo, Jian Huang, Mourad Benamara, Yuriy I. Mazur, Zhuo Deng, Gregory J. Salamo, Huiyun Liu, Baile Chen, Jiang Wu
Summary: We successfully integrated submonolayer quantum dot quantum cascade detectors (SML QD QCDs) on Si substrates via direct growth, reducing the threading dislocation density to a record level. High-quality InGaAs/GaAs SML QDs were observed on silicon for the first time. The as-grown SML QD QCDs on Si exhibited a normal incident photoresponse temperature up to 160 K, indicating their potential for scalable and affordable photodetectors and infrared focal plane arrays.
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Philipp Tatar-Mathes, Hoy-My Phung, Aaron Rogers, Patrik Rajala, Sanna Rant, Mircea Guina, Hermann Kahle
Summary: This study presents the operation of a semiconductor membrane external-cavity surface-emitting laser (MECSEL) using a gain membrane with a non-resonant cavity design. The MECSEL delivers watt-level output power, comparable to state-of-the-art results. The research shows that the design criteria for the MECSEL gain region can be relaxed compared to designs using distributed Bragg reflectors, minimizing the impact of defective Fabry-Perot micro-cavity effects.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Article
Optics
Samu-Pekka Ojanen, Jukka Viheriala, Nouman Zia, Eero Koivusalo, Joonas Hilska, Heidi Tuorila, Mircea Guina
Summary: Photonic integrated circuits fabricated using a Si3N4 waveguide platform exhibit low losses in a wide wavelength region. A high-performance integrated laser with broad wavelength tunability near a 2.6 μm wavelength region is demonstrated, based on a Si3N4 photonic integrated circuit incorporating a tunable reflector and a AlGaInAsSb/GaSb quantum-well gain element. The platform also supports low propagation loss up to 3.5 μm.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
D. Mitten, M. Hart, S. H. Warner, J. -P. Penttinen, M. Guina, Y. Kaneda
Summary: A vertical external cavity surface emitting laser (VECSEL) has been developed for a sodium guide star application. Stable single frequency operation with 21 W of output power near 1178 nm with multiple gain elements while lasing in the TEM00 mode has been achieved. This is the first demonstration of a high power single frequency VECSEL using a twisted-mode configuration and multiple gain mirrors located at the cavity folds.
Article
Physics, Applied
Y. Q. Huang, V Polojarvi, A. Aho, R. Isoaho, T. Hakkarainen, M. Guina, I. A. Buyanova, W. M. Chen
Summary: This study demonstrates the existence of nonlinear spin response in nonmagnetic materials and showcases it in a (Ga, N)As-InAs quantum dot coupled all-semiconductor nanostructure. The observed spin nonlinearity can be conveniently tuned with an external magnetic field and potentially operates at a speed exceeding 1 GHz.
PHYSICAL REVIEW APPLIED
(2023)
Article
Optics
Samu-Pekka Ojanen, Jukka Viheriala, Nouman Zia, Eero Koivusalo, Joonas Hilska, Heidi Tuorila, Mircea Guina
Summary: A discrete, tunable photonic integrated laser is demonstrated for multiwavelength spectroscopy. The laser combines a reflective semiconductor optical amplifier with a photonic integrated circuit, allowing for switching between three distinct emission wavelengths. The design simplifies the tuning mechanism compared to other hybrid lasers.
LASER & PHOTONICS REVIEWS
(2023)
Article
Energy & Fuels
Janne Puustinen, Joonas Hilska, Arto Aho, Esperanza Luna, Antti Fihlman, Mircea Guina
Summary: The development of low bandgap GaAsNBi solar cells grown using MBE is reported, and the As/Ga flux ratio is found to play an important role in controlling the solar cell performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Proceedings Paper
Nanoscience & Nanotechnology
Jukka Viheriala, Topi Uusitalo, Heikki Virtanen, Behzad Namvar, Patrik Rajala, Sanna Ranta, Teemu Hakkarainen, Antti Tukiainen, Guilhem Almuneau, Mircea Guina
Summary: This paper presents the development of vertical cavity surface emitting lasers (VCSELs) operating at 4.2K for energy efficient optical links between cryogenic systems and room-temperature data storage systems. The design considerations, material models, and validation of required electro-optical-thermal models are discussed. Successful operation at mA-level injection is demonstrated.
2023 IEEE PHOTONICS SOCIETY SUMMER TOPICALS MEETING SERIES, SUM
(2023)
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)