Article
Chemistry, Physical
Wei-Sheng Liu, Shih-Yuan Chen, Chien-Sheng Huang, Ming-Yuan Lee, Hsing-Chun Kuo
Summary: A sputtering system was used to prepare high-quality Cu2ZnSnS4 (CZTS) thin films with controlled elemental ratios. Increasing sulfurization temperature led to elevated Cu/(Zn + Sn) and Zn/Sn ratios, resulting in enhanced Cu2-xS secondary phase formation and increased surface roughness and void density on the CZTS thin films. Lowering the sulfurization temperature with reduced Zn/Sn ratio demonstrated improved CZTS thin-film quality with increased XRD and Raman intensity, and reduced FWHM value.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Fang- Lai, Jui-Fu Yang, Jia-En Li, Yu-Chao Hsu, Shou-Yi Kuo
Summary: In this study, the nano-metallic precursor was modified to suppress the generation of SnS2 secondary phase and improve the thin film's uniformity and quality simultaneously. The CZTS bifacial solar cells prepared using this method showed significantly improved junction-rectifying characteristics with an efficiency of 1.59%. This proposed method to remove SnS2 is effective, simple, and environmentally friendly.
Article
Multidisciplinary Sciences
Ali A. Alhazime
Summary: Transparent semiconductor low cost thin films from benign, earth-abundant materials have been reported. These films show promising properties as electrodes in optoelectronic devices.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2022)
Article
Energy & Fuels
Sadanand, Pravin Kumar Singh, Shambhavi Rai, Pooja Lohia, D. K. Dwivedi
Summary: This article presents the modeling outcomes of novel and third-generation heterojunctions thin-film solar cells, focusing on the performance and optimization methods of promising photovoltaic absorber materials such as CZTS, CuSbS2, and CuSbSe2. Further analysis and study of band alignment, material parameters, and device characteristics aim to improve the efficiency and reproducibility of these solar cells.
Article
Chemistry, Physical
Ubaidah Syafiq, Eleonora Isotta, Narges Ataollahi, Ketan Lohani, Sally Luong, Vanira Trifiletti, Oliver Fenwick, Paolo Scardi
Summary: In this work, Cu/Zn/Sn-based ternary and quaternary chalcogenides inks were synthesized for the fabrication of thermoelectric generators (TEGs) using safe, low-cost, and abundant materials. The chalcogenide and AZO thin films were successfully coupled in a p-n device, with the CZTSe/AZO TEG exhibiting the highest power output. Factors affecting TEG performance, including composition, density, and secondary phases in the chalcogenide thin films, were investigated.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Juhyung Park, Ki-Yong Yoon, Myung-Jun Kwak, Jae-Eun Lee, Jihun Kang, Ji-Hyun Jang
Summary: The study manipulated the Sn concentration in hematite through a two-step annealing process, resulting in reduced structural disorder and improved charge transport ability, leading to higher photocurrent density. By decorating with efficient co-catalyst, a further increase in photocurrent density was achieved. The optimized hematite photocatalyst demonstrated improved charging potential and cyclability in solar-assisted chargeable batteries compared to expensive Ir/C.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Joakim Ekspong, Christian Larsen, Jonas Stenberg, Wai Ling Kwong, Jia Wang, Jinbao Zhang, Erik M. J. Johansson, Johannes Messinger, Ludvig Edman, Thomas Wagberg
Summary: This study introduces an efficient and low-cost solar-driven electrolyzer made of Earth-abundant materials, as well as a lightweight solar-driven water-splitting device with high peak solar-to-fuel conversion efficiency.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Hongjun Chen, Meng Zhang, Thanh Tran-Phu, Renheng Bo, Lei Shi, Iolanda Di Bernardo, Jueming Bing, Jian Pan, Simrjit Singh, Josh Lipton-Duffin, Tom Wu, Rose Amal, Shujuan Huang, Anita W. Y. Ho-Baillie, Antonio Tricoli
Summary: Metal halide perovskite solar cells with an appropriate bandgap and high output voltage can directly drive solar water splitting, but their sensitivity to moisture affects their application in integrated devices. Using earth-abundant metals as co-catalysts can improve the efficiency of low-cost H-2 production.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
E. Luevano-Hipolito, Leticia M. Torres-Martinez
Summary: Heterogeneous photocatalysis is an effective solution for environmental remediation, and using naturally occurring semiconductor materials as photocatalysts has shown promising results in air purification and solar fuel generation.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Energy & Fuels
Mohammad Badrooj, Farid Jamali-Sheini, Naeimeh Torabi
Summary: Achieving a low-toxicity mixed Sn/Pb halide perovskite solar cell with higher performance and lower cost is still a major challenge. In this study, the element Zn was incorporated as a substitute cation for the toxic element Pb into the CH3NH3Sn0.25Pb0.75I3 perovskite compound, leading to improved crystal quality, surface coverage, grain size, and reduced non-radiative recombination mechanism. The findings provide a new area for further research on lead reduced hybrid perovskite solar cells.
Article
Physics, Condensed Matter
Yi-Man Zhang, Zhan-Ju Jia, Zong-Yan Zhao
Summary: The study found that the presence of Cu2S secondary phase is not harmful and may even improve the photovoltaic performance of CZTS, while the presence of ZnS secondary phase is detrimental and should be avoided.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Multidisciplinary Sciences
E. Luevano-Hipolito, Mayte G. Fabela-Cedillo, Leticia M. Torres-Martinez, Maria E. Zarazua-Morin
Summary: Photocatalytic CO2 reduction is a promising technology for generating renewable solar-based fuels. This study successfully fabricated sodium iron titanate (NaFeTiO4) photocatalysts from ilmenite mineral, which exhibited full spectrum light response and good electron transfer properties. The photocatalysts effectively reduced CO2 into formic acid with high selectivity. The synthesis temperature was found to affect the efficiency of CO2 reduction, and the NaFeTiO4 samples showed potential for reducing CO2 from air under visible light. The stability of the CO2 reduction process was also confirmed after seven days of continuous evaluation.
Article
Engineering, Electrical & Electronic
D. Prasad, G. Anitha, L. Megalan Leo, Atul Kumar
Summary: Despite advancements in PV physics, PV has not surpassed conventional energy due to cost, toxicity, and stability concerns. This study focuses on CuFeO2 as a potential low-cost, high-efficiency solar cell material, with theoretical modeling and analysis indicating its promising photovoltaic performance.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Qian Li, Jinpeng Hu, Yaru Cui, Juan Wang, Jinjing Du, Miao Wang, Yu Hao, Tong Shen, Lizhen Duan, Simin Wang, Ke Sun
Summary: In this study, a Cu-Zn-Sn-O(CZTO) precursor was successfully synthesized and used to prepare Cu2ZnSnS4 thin films, showing promising optical properties. Control of the synthesis of Cu-Zn-Sn-O by adjusting parameters during coprecipitation and calcination stages facilitated the formation of Cu2ZnSnS4 thin films.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Jae Yu Cho, Jun Sung Jang, Vijay C. Karade, Raju Nandi, Pravin S. Pawar, Tae-Jun Seok, Wonjin Moon, Tae Joo Park, Jin Hyeok Kim, Jaeyeong Heo
Summary: Atomic layer deposition (ALD) has been used to synthesize ZnSnO thin films with different Zn/(Zn+Sn) ratios, and their application as buffer layers in CZTSSe solar cells has been investigated. The solar cells with ZnSnO buffer layers show a significant improvement in short-circuit current density (J(sc)) compared to the CdS-buffered devices, primarily due to the wide band gap and high transparency of ZnSnO films. The results also demonstrate that the Zn/(Zn+Sn) ratio has a significant impact on the device parameters, particularly the open-circuit voltage (V-oc) and fill factor (FF).
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Mohit Sood, Jakob Bombsch, Alberto Lomuscio, Sudhanshu Shukla, Claudia Hartmann, Johannes Frisch, Wolfgang Bremsteller, Shigenori Ueda, Regan G. Wilks, Marcus Baer, Susanne Siebentritt
Summary: In devices based on Zn(O,S)/CuInS2, interface recombination is mainly caused by defects near the interface rather than unfavorable energy-level alignment or Fermi-level pinning. Research has shown that the dominant recombination channel is present at the Zn(O,S)/CuInS2 interface.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Physics, Applied
Riya Wadhwa, Abhay Agrawal, Mukesh Kumar
Summary: Two-dimensional layered materials, such as molybdenum disulfide (MoS2), have unique electrical and optical properties that make them attractive for next-generation photodetector applications. This review critically discusses the current status and progress of MoS2-based photodetectors, as well as the open challenges and opportunities for their future application.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Energy & Fuels
Mohit Sood, Aleksander Urbaniak, Christian Kameni Boumenou, Thomas Paul Weiss, Hossam Elanzeery, Finn Babbe, Florian Werner, Michele Melchiorre, Susanne Siebentritt
Summary: The study reveals the distinct interface recombination characteristics in copper indium di-selenide solar cells, which are not affected by reduced interface bandgap or Fermi-level pinning. Experimental analysis and numerical simulations suggest that the V-OC deficit may be related to acceptor defects, highlighting the need for complementary techniques to identify the cause of interface recombination in the devices.
PROGRESS IN PHOTOVOLTAICS
(2022)
Article
Nanoscience & Nanotechnology
Riya Wadhwa, Anupam Ghosh, Deepu Kumar, Pradeep Kumar, Mukesh Kumar
Summary: In this study, Pt nanoparticle enhanced broadband photoresponse in VA-MoS2 is reported. The integration of Pt NPs enhanced the optical absorbance of MoS2 and formed a Schottky junction, inhibiting electron transmission and significantly reducing NEP. The plasmonic-enabled photodetector showed enhanced responsivity and detectivity with a low response time, attributed to faster carrier transport.
Article
Materials Science, Multidisciplinary
Nisika, Anupam Ghosh, Damanpreet Kaur, Kulwinder Kaur, Manoj K. Yadav, Ankush Bag, Mukesh Kumar
Summary: Inserting an ultrawide-bandgap Ga2O3 film between the CZTS absorber and TiO2 electron transport layer for interface passivation effectively improves the efficiency and charge extraction ability of CZTS solar cells.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Abhay Agrawal, Naveen Kumar, Deepu Kumar, Shubhendra K. Jain, Govind Gupta, Pradeep Kumar, Mukesh Kumar
Summary: In this study, a low-cost and transparent Al-doped ZnO (AZO) electrode was developed for self-powered and highly responsive photodetectors from visible to near-infrared regions. The AZO-MoS2 photodetector demonstrated superior performance compared to traditional metal electrodes.
SURFACES AND INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Damanpreet Kaur, Rakhi, Pargam Vashishtha, Govind Gupta, Subhendu Sarkar, Mukesh Kumar
Summary: This study reports a simple and cost-effective method to enhance the device performance of amorphous gallium oxide thin film photodetectors by nanopatterning the surface. The formation of ripples on the surface leads to the creation of anisotropic conduction channels and an increase in surface defects, resulting in a reduction in device decay time and an improvement in device speed.
Article
Physics, Condensed Matter
Riya Wadhwa, Sanjeev Thapa, Sonia Deswal, Pradeep Kumar, Mukesh Kumar
Summary: Recently, there has been significant interest in the unique characteristics and potential applications of Molybdenum disulfide (MoS2). While progress has been made in the laboratory-scale, the key requirement for commercializing two-dimensional (2D) technology is the synthesis of MoS2 on a large wafer scale. In this study, we demonstrate tunable growth of MoS2 with varied morphologies using radio frequency magnetron sputtering. The controlled growth from in-plane to vertically-aligned (VA) MoS2 flakes has been achieved on different substrates and the uniformity of the flakes has been confirmed. This work provides a facile approach for synthesizing layered materials on a wafer scale and paves the way for mass production of high-quality 2D materials.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Physics, Applied
Zeying Chen, Tara P. P. Dhakal
Summary: In this study, CH(NH2)(2)SnI3 (FASnI(3)) orthorhombic perovskite nanocrystals with an average diameter of 7.7 nm and a photoluminescence emission at 825 ± 2 nm were synthesized using the ligand-assisted reprecipitation method. The addition of SnF2 improved the stability of the nanocrystals and significantly delayed the oxidation from FASnI(3) to FA(2)SnI(6), which was confirmed by observing characteristic diffraction peaks using x-ray diffraction. The optimized amount of SnF2 was found to be 6%. The FASnI(3) nanocrystals remained stable for at least 265 days under N-2 storage at room temperature and 20% relative humidity.
APPLIED PHYSICS REVIEWS
(2023)
Article
Chemistry, Physical
Riya Wadhwa, Damanpreet Kaur, Yuchen Zhang, Akhil Alexender, Deepu Kumar, Pradeep Kumar, Manoj A. G. Namboothiry, Quinn Qiao, Mukesh Kumar
Summary: Recently, 2D materials have attracted significant research attention in electronics and optoelectronics due to their unique properties. However, single 2D material-based photodetectors suffer from limitations such as narrow spectral sensitivity and slow response time. This study presents a scalable 2D/3D heterostructure of MoS2/Ga2O3 with outstanding UV-C to NIR broad spectral photoresponse. The MoS2/Ga2O3 photodetector demonstrated a significant increase in responsivity and EQE compared to pristine MoS2 photodetector, offering exciting opportunities for optoelectronics and imaging applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Gaurav Bassi, Riya Wadhwa, Sonia Deswal, Pradeep Kumar, Mukesh Kumar
Summary: PtS2 is a promising transition metal dichalcogenide with tunable band gap and high carrier mobility. In this study, the growth of PtS2 is controlled by fine-tuning growth parameters, and a high-performance PtS2 photodetector is successfully fabricated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Gaurav Bassi, Riya Wadhwa, Mukesh Kumar
Summary: In this study, a simple approach is presented to fabricate large-area PtS2/MoS2 photodetectors with broad spectral detection range and high performance under near-infrared illumination.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Damanpreet Kaur, Riya Wadhwa, Yuchen Nisika, Yuchen Zhang, Poojan Indrajeet Kaswekar, Quinn Qiao, Anju D. Sharma, Mark Poliks, Mukesh Kumar
Summary: This study reports the band alignment modification of heterojunction formed between amorphous Ga2O3 and CdS. The annealed heterojunction device shows a reduction in dark current, enhanced photocurrent, and shorter response time. The changes at the interface due to annealing lead to a significant alteration in the band alignment and carrier dynamics, thereby completely altering the ultimate device performance.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Mohit Sood, Damilola Adeleye, Sudhanshu Shukla, Tobias Torndahl, Adam Hultqvist, Susanne Siebentritt
Summary: Cu(In,Ga)S-2 has the potential to be a prime candidate for the top cell in tandem solar cells due to its tunable bandgap and favorable electronic properties. This study explores the use of low-temperature atomic layer deposited (Zn,Sn)O thin film as a buffer layer to improve the optoelectronic and electrical characteristics of the devices, achieving a 14% PCE.
FARADAY DISCUSSIONS
(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)
