Article
Chemistry, Multidisciplinary
Marcella Guenther, Soroush Lotfi, Sergio Sanchez Rivas, Dominic Blaette, Jan P. Hofmann, Thomas Bein, Tayebeh Ameri
Summary: Although zinc oxide is widely used in organic solar cells, its light-soaking issues can lead to reversible degradation and incorrect stability measurements. The re-adsorption of oxygen trapped at the interface of ZnO causes this reversible aging, which can be undone with a UV exposure. However, this UV pretreatment compromises device efficiency and production in an oxygen-free environment.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Polymer Science
Yanan Guo, Ming Liu, Chenyuhe Yuan, Zhongjie Ren, Yao Liu
Summary: This study focuses on the modification of ZnO interlayers using polymer zwitterions, which effectively passivate defects in ZnO films and enhance the conductivity of the interlayers. The modified ZnO interlayers show advantages in improving the performance of different types of OSCs. The reduced work function of the modified ZnO films contributes to the increased efficiency of the solar cell devices.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Energy & Fuels
Jun Young Kim, Swarup Biswas, Yongju Lee, Hyeong Won Lee, Jae Min Jeon, Hyeok Kim
Summary: Organic polymer semiconductor-based polymer solar cells (PSCs) have gained significant research interest due to their superior properties. Efforts have been made to improve the performance of PSCs by changing the electron transport layer materials to enhance electron mobility.
Article
Chemistry, Multidisciplinary
Sikandar Iqbal, Aadil Nabi Chishti, Muhammad Bilal Hussain, Fakhr uz Zaman, Abdul Qayum, Rashid Mehmood, Shahid Zaman
Summary: The conductivity and intrinsic properties of PEDOT:PSS have been improved by doping with ammonium chloride (NH4Cl), making it a potential candidate for high-efficiency inverted perovskite solar cells. The doped PEDOT:PSS exhibits higher conductivity and surface roughness, leading to increased light absorption and improved power conversion efficiency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Computer Science, Information Systems
Hyeong Won Lee, Swarup Biswas, Yongju Lee, Hyeok Kim
Summary: Inverted structured organic solar cells (OSCs) have gained attention for their higher stability and performance compared to conventional structured OSCs. Doping the electron transport layer (ETL) significantly enhances the power conversion efficiency (PCE) of the OSCs. Using an optimized concentration of gallium-doped zinc oxide (GZO) as the ETL, the OSCs show the highest PCE under indoor lighting.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Qing Yang, Xuan Liu, Shuwen Yu, Zhendong Feng, Lixin Liang, Wei Qin, Youyang Wang, Xiaobo Hu, Shaoqiang Chen, Zhaochi Feng, Guangjin Hou, Kaifeng Wu, Xin Guo, Can Li
Summary: The use of IT-DOH as a acceptor material has successfully improved the performance of i-PSCs, achieving a high conversion efficiency of 22.09%.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Chengbo Li, Jie Hu, Shurong Wang, Jing Ren, Bin Chen, Taisong Pan, Xiaobin Niu, Feng Hao
Summary: The introduction of lead chloride-assisted crystallization can release lattice strain in perovskite films, leading to improved efficiency and long-term stability of PSCs.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Xin Song, Guilin Liu, Weilian Gao, Yongyue Di, Yunpeng Yang, Fei Li, Shunfeng Zhou, Jie Zhang
Summary: By doping zirconium (Zr) into zinc oxide (ZnO) layers, it is possible to increase light transmittance, optimize surface morphology, enhance charge extraction performance, and reduce charge recombination probability, thereby significantly improving the efficiency and performance of organic solar cells.
Article
Nanoscience & Nanotechnology
Hui Li, Abdulaziz S. R. Bati, Ronan Chu, Guanran Zhang, Yanyan Li, Qianqian Lin, Paul L. Burn, Paul E. Shaw, Ian R. Gentle
Summary: This study demonstrates that the electronic properties of inorganic nickel oxide films can be modified by fluorination, resulting in reduced surface defects and improved performance and stability of perovskite solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hong Nhan Tran, Duc Quang Dao, Yung Jin Yoon, Yun Seop Shin, Jin San Choi, Jin Young Kim, Shinuk Cho
Summary: A solution-processable method for NiO deposition without annealing has been developed to address wettability issues, improving its potential application in solar cells. By using a mixed solvent and a unique nanoparticle suspension, NiO can be successfully deposited on hydrophobic surfaces. The high efficiency of inverted non-fullerene solar cells with NiO HTL demonstrates its competitiveness compared to traditional devices.
Article
Energy & Fuels
Nian Liu, Xianhu Wu, Guanglei Cui, Huihui Yan, Mengdi Xu, Haidong Huang, Jieyu Bi, Gaojie Xia, Min Gu
Summary: This study introduces a method of using potassium fluoroborate-doped PEDOT:PSS as a hole transport layer in inverted perovskite solar cells (PSCs), which significantly improves the power conversion efficiency. By doping with KBF4, the interface defects between PEDOT:PSS and the perovskite layer are reduced, leading to enhanced performance.
Article
Energy & Fuels
Sankar Sekar, K. Ashok Kumar, Vijaya Gopalan Sree, G. Gnanamoorthy, Sejoon Lee, Deuk Young Kim, Ramalingam Manikandan
Summary: The use of new interlayer materials can significantly improve the photovoltaic conversion efficiency and device stability in organic solar cells.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Feiping Lu, Shaopeng Fu, Limin Wang, Sanshan Du, Zheng Dou, Xitao Yang, Jianfeng Li
Summary: Researchers developed an organic-inorganic hybrid electron transport layer (ETL) using benzyl viologen dichloride (BV-2Cl) as a dopant for the preparation of sol-gel ZnO precursor solution. Inverted polymer solar cells (I-PSCs) based on PTB7-Th:PC71BM with hybrid ZnO:BV-2Cl as ETL showed significantly improved photovoltaic performance. The use of BV-2Cl as a dopant for ZnO ETL represents a facile and efficient method for the fabrication of high-performance I-PSCs.
Article
Chemistry, Physical
Xingyu Pu, Junsong Zhao, Yongjiang Li, Yixin Zhang, Hok-Leung Loi, Tong Wang, Hui Chen, Xilai He, Jiabao Yang, Xiaoyan Ma, Xuanhua Li, Qi Cao
Summary: A three-dimensional star-shaped polymer with various groups is synthesized to regulate the light-absorbing layer of perovskite, effectively improving the optoelectronic performance. The multifunctional star polymer can passivate and suppress both deep-level and shallow-level defects on the perovskite surface and grain boundaries, resulting in enhanced efficiency and stability of the solar cells.
Article
Nanoscience & Nanotechnology
Marcella Guenther, Dominic Blaette, Anna Lena Oechsle, Sergio Sanchez Rivas, Amir Abbas Yousefi Amin, Peter Mueller-Buschbaum, Thomas Bein, Tayebeh Ameri
Summary: The research demonstrates that adding fullerene derivatives to organic solar cells can improve performance and stability, suppressing photocatalytic degradation and extending device lifetime. This strategy shows promise for enhancing the efficiency and durability of OSCs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Libo Miao, Yegang Lu, Yu Zhang, Wei Sun, Ziyang Hu
Summary: In this study, the influence of thickness reduction on the phase-change behavior of GeTe films was investigated by studying both uncovered and Si3N4-covered GeTe films. The results showed that with decreasing film thickness, the resistance, optical band gap, and thermal stability of GeTe films were improved. The coverage of Si3N4 further enhanced the thermal stability and resistance drift of GeTe.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Wenlong Yao, Shuyan Fang, Ziyang Hu, Like Huang, Xiaohui Liu, Houcheng Zhang, Jing Zhang, Yuejin Zhu
Summary: This study uses photoconductive atomic force microscopy to investigate the photocurrent and photovoltage of large-grained perovskites, revealing that photocurrent collection along grain boundaries relies on adjacent grains, showing grain boundary to grain boundary heterogeneity. Additionally, it is found that the photovoltage of grains deduced at specific positions is larger than that of grain boundaries, playing a crucial role in improving photovoltage.
Article
Nanoscience & Nanotechnology
Rui Zhao, Zhiqiang Deng, Zequn Zhang, Jing Zhang, Tonghui Guo, Yanjun Xing, Xiaohui Liu, Like Huang, Ziyang Hu, Yuejin Zhu
Summary: This study addresses the issues of facile agglomeration and energy level mismatch in SnO2 films used in perovskite solar cells by doping alkali metal oxalates. By optimizing the film quality and energy states of SnO2-Na, the PSC efficiency is significantly improved, achieving a high open-circuit voltage.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Qing Dai, Qin Ling, Like Huang, Xiaohui Liu, Houcheng Zhang, Jing Zhang, Yuejin Zhu, Ziyang Hu
Summary: This study successfully controlled solvent volatilization to achieve high-quality crystallization of two-dimensional perovskites with full coverage and lateral homogeneity. It was found that variations in solvent evaporation rate resulted in lateral film coverage gradients, affecting the growth uniformity and photovoltaic efficiency of the films. By adjusting the temperature of the casting perovskite precursor, film inhomogeneity and device performance variation could be alleviated. Regulating the radial morphology of hot-casting thin films enables coating techniques amenable to solution processes for robust reproducibility.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Physics, Applied
Qing Dai, Yuchen Miao, Xiaorong Qi, Zhenfu Zhao, Feiyu Zhao, Liqiang Zhu, Ziyang Hu
Summary: Ions or charged vacancies drift induced by electric fields in organic-inorganic halide perovskites contribute to resistive switching memory (RSM) devices. Two-dimensional (2D) OIHP films are used as the switching layer to fabricate RSM devices with stable and low voltage resistive switching characteristics. The addition of a NiOx hole transport layer enhances the reliability of RSM devices in atmospheric conditions.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Condensed Matter
Qin Ling, Qing Dai, Liu Yang, Xu Wang, Like Huang, Xiaohui Liu, Houcheng Zhang, Jing Zhang, Yuejin Zhu, Ziyang Hu
Summary: This study investigates carrier recombination and charge extraction in quasi-2D perovskite solar cells using scanning probe microscope technology, steady-state photoluminescence measurements, and time-resolved photoluminescence spectroscopy. It finds that the built-in potential in quasi-2D perovskite can hinder energy loss in inverted device configurations. Interface photogenerated recombination in quasi-2D perovskite solar cells can only be fully understood when considering the complete device. This work emphasizes the importance of considering restructuring loss from the perspective of the complete device in quasi-2D perovskite solar cells, rather than individual layers or interfaces.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Physics, Applied
Yao Li, Ning Liu, Zuxiong Xu, Zelin Xu, Yi Pan, Jing Zhang, Like Huang, Ziyang Hu, Yuejin Zhu, Xiaohui Liu
Summary: The doping of alkaline earth metal ions into the ZnO electron transporting layer can enhance the photovoltaic performance of CsPbI2Br perovskite solar cells, leading to faster charge extraction, suppressed charge recombination, and improved device stability.
APPLIED PHYSICS LETTERS
(2023)
Correction
Physics, Condensed Matter
Qin Ling, Qing Dai, Liu Yang, Xu Wang, Like Huang, Xiaohui Liu, Houcheng Zhang, Jing Zhang, Yuejin Zhu, Ziyang Hu
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
Yuchen Miao, Jun Wu, Xiaorong Qi, Liu Yang, Xu Wang, Fei Zheng, Feiyu Zhao, Shareen Shafique, Yuejin Zhu, Ziyang Hu
Summary: Based on the hot-casting method, uniform and compact 2D-3D gradient perovskite thin films were prepared by investigating the effects of substrate temperature on the surface morphology and internal phases distribution of 2D perovskite films. The gradient phase distribution along the longitudinal direction of the thin film improves the photosensitivity of the photodiode over the whole visible spectrum range.
Article
Nanoscience & Nanotechnology
Xiaorong Qi, Liu Yang, Xu Wang, Fei Zheng, Like Huang, Xiaohui Liu, Jing Zhang, Shareen Shafique, Yuejin Zhu, Ziyang Hu
Summary: In this study, time-dependent photoluminescence spectroscopy was used to investigate the photoinduced phase segregation of 2D perovskites and explore the dependence of film stability on perovskite phases. The results showed that phase segregation is more likely to occur at the top side of the film rather than the bottom side. The vertical alignment of different phases has a decisive effect on photoinduced phase segregation and the vertical stability of the film.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Liu Yang, Fei Zheng, Xu Wang, Like Huang, Xiaohui Liu, Jing Zhang, Yuejin Zhu, Ziyang Hu
Summary: This study investigates the influence of A-site cations on the electrical properties of perovskite films in solar cells. The results reveal differences in potential and hysteresis among perovskite films with different A-site cations.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ning Liu, Zuxiong Xu, Yi Pan, Jianwei Wang, Zhongyu Liu, Jing Zhang, Like Huang, Ziyang Hu, Yuejin Zhu, Xiaohui Liu
Summary: A facile and effective surface treatment strategy is proposed to modify the CsPbI3 surface with ethanolamine, leading to significantly reduced defects, and ameliorated band alignment and morphology. Consequently, a champion power conversion efficiency of 18.41% with improved stability is achieved for the inverted CsPbI3 solar cells.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Kaiwen Liang, Like Huang, Tianzhou Wang, Chaofeng Wang, Yi Guo, Yunliang Yue, Xiaohui Liu, Jing Zhang, Ziyang Hu, Yuejin Zhu
Summary: This work presents a systematic simulation of low bandgap formamidinium tin iodide (FASnI(3))-based p-n heterojunction perovskite solar cells to investigate the effects of multiple optoelectronic variations on the photovoltaic performance. The simulation results show that the acceptor doping density and the absorber defect density greatly affect the power conversion efficiency. It is also found that paying attention to the interfacial defect density and the conduction band offset between the electron transport layer and absorber layer is crucial for improving the performance of PSCs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Xiaohui Liu, Ning Liu, Zhongyu Liu, Jianwei Wang, Like Huang, Ziyang Hu, Jing Zhang, Yuejin Zhu
Summary: This study successfully improves the performance of CsPbI2Br PSCs by constructing a buried interface with desired properties using cross-linkable small molecule thioctic acid (TA). By inserting TA at the ZnO/perovskite buried interface, the surface defects are greatly passivated, interfacial contact is ameliorated, and energy level alignment is enhanced. This results in accelerated charge extraction, suppressed charge recombination, and superior power conversion efficiency. The TA-based PSCs also show tremendous improvements in long-term and operational stability.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Rui Zhao, Zhiqiang Deng, Zequn Zhang, Jing Zhang, Tonghui Guo, Yanjun Xing, Xiaohui Liu, Like Huang, Ziyang Hu, Yuejin Zhu
Summary: By doping alkali metal oxalates into SnO2 precursor, this study improved the quality and electron conductivity of SnO2-Na films, optimized band alignment, and achieved the best PSC efficiency of 20.78% with a significantly enhanced open-circuit voltage of 1.10 V.
ACS APPLIED MATERIALS & INTERFACES
(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)
