Article
Engineering, Electrical & Electronic
Rabin Paul, Trupti Ranjan Lenka, Fazal Ahmed Talukdar, Nour El Islam Boukortt, Hieu Pham Trung Nguyen
Summary: The ultrathin-film solar cell technology utilizing chalcogenide materials like CIGS, CZTS, and CZTSe has shown promising performance. This study proposes a single-layer a-Si/CZTSe structure for the UTFSC, which exhibits an efficiency of 10.99% at optimized thicknesses. Introducing defects in the CZTSe layer reduces the cell's performance to 10.58%. The results suggest a potential for further development of UTFSC using nontoxic materials and a simple fabrication process.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Multidisciplinary
Kelechi C. Nwambaekwe, Milua Masikini, Penny Mathumba, Morongwa E. Ramoroka, Samantha Duoman, Vivian Suru John-Denk, Emmanuel I. Iwuoha
Summary: Metal chalcogenides like copper zinc tin sulfide (CZTS) have shown promise as photovoltaic cell materials, but are hindered by crystal defects and low open circuit potential. Strategies such as alloying and substitution with other elements have improved the properties, leading to the synthesis of a novel kesterite nanomaterial. Analysis confirmed the nanostructured nature of CZTS and the substituted material CZTSTe, which displayed enhanced electrical conductivity and thermal stability, making them favorable for photovoltaic applications.
Article
Engineering, Electrical & Electronic
G. S. Sahoo, S. Routray, K. P. Pradhan, G. P. Mishra
Summary: Quantum engineering in kesterite solar cells has proposed a quantum-dot-embedded structure using CZTS(x)Se1-(x) and CZTS with different sulfur (S) and selenium (Se) content as dot and barrier. The incorporation of quantum dots and detailed investigation on optical and electrical performance show the uniqueness of this study, highlighting the effect of carrier quantization in the material.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Editorial Material
Chemistry, Physical
Pooja Semalti, Vikash Sharma, Shailesh Narain Sharma
Summary: CZTS, a P-type semiconductor with a direct bandgap, is prepared by a cost-effective colloidal route using the 'hot-injection' method. It exhibits single-phase highly crystalline structure with monodisperse nanoparticles of 2-5 nm size. CZTS shows excellent photocatalytic degradation activity for organic pollutants and industrial waste in water.
JOURNAL OF MATERIOMICS
(2021)
Article
Materials Science, Multidisciplinary
Grace N. Ngubeni, Olusola Akinbami, Lineo Mxakaza, Siyabonga Nkabinde, Tshwarela Kolokoto, Francis Otieno, Makwena J. Moloto, Kalenga P. Mubiayi, Nosipho Moloto
Summary: This study investigated the application of Cu2ZnSnS4 (CZTS) and Cu2ZnSnSe4 (CZTSe) nanoparticles as counter electrodes in dye-sensitized solar cells (DSSCs). The results showed that CZTSe had better electrocatalytic activity on glassy carbon, while CZTS performed the best on ITO and FTO substrates.
Article
Materials Science, Multidisciplinary
Patrick Pearson, Jan Keller, Jes Larsen, Volodymyr Kosyak, Charlotte Platzer-Bjorkman
Summary: In 2017, CIGS, CZTS, and CZTSSe thin film solar cells were irradiated by 3 MeV protons to study their radiation hardness and recovery. CZTS and CZTSSe showed better resistance and recovery in terms of performance compared to CIGS. However, in a later investigation in 2021, while CZTSSe fully recovered from radiation damage, it exhibited aging-related degradation.
Article
Engineering, Electrical & Electronic
P. Chandrasekar, S. K. Palaniswamy, Soumyaranjan Routray
Summary: The study proposed quantum well-solar cells based on kesterite material, achieving high solar cell efficiency through a large number of quantum wells and performance analysis. The research focused on the quantum efficiency of solar cells with separate internal and external absorptions, emphasizing the impact of carrier quantization on material properties.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Multidisciplinary
S. T. Yussuf, K. V. Mokwebo, K. C. Januarie, M. Oranzie, E. I. Iwuoha
Summary: Recently, kesterite (CZTS) has been considered as a promising alternative material for low-cost thin film solar cells due to its high absorption coefficient, direct band gap, natural abundance, and low toxicity. However, the efficiency of CZTS solar cells is still relatively low compared to silicon, which hinders its commercialization. Therefore, developing new materials with improved optical and photovoltaic properties is encouraged.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
R. Aruna-Devi, M. Latha, S. Velumani, Jose Alvaro Chavez-Carvayar
Summary: The concentration of copper has a significant impact on the properties of CZTS nanoparticles, affecting their optical bandgap and particle size. The right concentration of copper can lead to the desired pure phase and ideal composition of CZTS.
Article
Materials Science, Multidisciplinary
Junheng Chen, Yanyan Tu, Yu Zou, Xiaohong Li, Jiang Jiang
Summary: Electrochemical conversion of CO2 into value-added chemicals, such as formic acid, using copper sulfides nanocrystals synthesized through a simple ethylene glycol solvothermal route showed high Faradic efficiency due to their high S content and specific morphology.
Article
Chemistry, Inorganic & Nuclear
Amir Reza Judy Azar
Summary: In this study, tin (II) sulfide and lead (II) sulfide nanoparticles were successfully synthesized using a simple method, characterized by various techniques, and found to have spherical morphology with average particle sizes ranging from 2.5-10 nm. Optical band gap measurements showed a higher value for the nanoparticles compared to bulk band gap values, indicating the presence of quantum confinement effects. This research provides a new perspective on the fabrication of novel metal sulfide nanoparticles.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Physics, Condensed Matter
Ahsan Ali, Muhammad Kashif, Mazhar Tanveer Afzal Naz, Waqar Adil Syed
Summary: The study introduces environmentally friendly and low-cost materials for photovoltaic applications, where antimony is substituted in the matrix of copper-tin sulfide to form Cu2SbSnS4 nanoparticles. By investigating the effect of antimony substitution with different ratios, the structural properties reveal a significant alteration in the morphology of CATS, while the optical bandgap measurements suggest the potential application of CATS in solar cells.
SOLID STATE COMMUNICATIONS
(2021)
Article
Energy & Fuels
Idris Ibrahim, Dong Han Seo, Alexander Angeloski, Andrew McDonagh, Ho Kyong Shon, Leonard D. Tijing
Summary: This study successfully synthesized heterostructure microflowers composed of vertically aligned CuS/Sn2S3 nanosheets using a single-step solvothermal method for solar steam generation application. Through the excellent design of microflower structures and nanocavities, high-efficiency water evaporation, salt ions rejection, and organic dye removal were achieved in various applications.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Chemistry, Physical
Xiaoyan Li, Chaojin Xuan, Boxu Yang, Weichen Wang, Mingzhong Wang, Xiaopeng Zhao
Summary: In this paper, center-doped monodisperse Cu-doped ZnSe (ZnSe:Cu) quantum dots are synthesized by co-nucleation doping method, and then a double-layered ZnS shell is grown on the QDs. The prepared ZnSe:Cu/ZnS/ZnS QDs exhibit high photoluminescence intensity and excellent stability in the blue region. The stability is attributed to the ZnS shell grown outside the ZnSe:Cu core, which effectively limits excitons and Cu and isolates O2. This work provides a new approach to enhance the stability of quantum dots.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Weihai Fu, Yuding He, Kaiyue Huang, Xilong He, Guoshu Dai, Jiacheng Li, Xiang Mei, Peixuan Jin, Yuanzheng Yang, Weitong Cai
Summary: Flexible CZTS thin-film solar cells were prepared on flexible aluminum foil by vacuum magnetron sputtering and sulfide annealing. The step cooling method was used to tune the formation of CZTS, and it was found that the microstructure and properties of the CZTS film can be controlled by this method. The sample treated at 300°C showed the highest CZTS content, smaller grain size, and fewer secondary phases.
Article
Materials Science, Ceramics
Ivana Panzic, Vilko Mandic, Jimmy Mangalam, Thomas Rath, Floren Radovanovic-Peric, Mattia Gaboardi, Brend de Coen, Sara Bals, Nadine Schrenker
Summary: The structural stability of perovskite solar cells (PSCs) with different electron transfer layers (ETL) was investigated. It was found that the nanostructured ZnO ETL caused voids in the perovskite absorber, while the mesostructured TiO2 ETL improved the stability parameters of the absorber layer.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Wolfgang E. Ernst, Maximilian Lasserus, Daniel Knez, Ferdinand Hofer, Andreas W. Hauser
Summary: Nanoparticles of gold and vanadium oxide were synthesized by doping cold helium droplets in a molecular beam apparatus, and characterized using various techniques. Janus particles of Au and V2O5 were identified after deposition, with V2O5 reducing to V2O3 at high temperatures and restructuring of gold atoms into a Wulff-shaped cluster layer. The temperature-dependent dynamic interplay between gold and vanadium oxide in structures of a few nanometers size was the central topic of this study.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Multidisciplinary
Marco Sigl, Thomas Rath, Bettina Schlemmer, Peter Fuerk, Gregor Trimmel
Summary: A new quinoxaline-fluorene co-polymer, PFQ10, was synthesized through the copolymerization of 5,8-dibromo-6,7-difluoro-2-[(2-hexyldecyl)oxy]quinoxaline and 9,9-dioctyl-9H-9-fluorene-2,7-bis(boronic acid pinacol ester) using the Suzuki-Miyaura reaction. The reaction conditions were optimized to obtain polymers with molecular weights up to 17.2 kDa and a low dispersity of 1.3. PFQ10 exhibited blue photoluminescence with an emission maximum at 459 nm and a relative fluorescence quantum yield of 0.37. Furthermore, PFQ10 showed a blue-green electroluminescence when employed in organic light-emitting diodes (OLEDs).
MONATSHEFTE FUR CHEMIE
(2023)
Article
Chemistry, Multidisciplinary
Werner Seebacher, Marcel Kaiser, Pascal Maeser, Robert Saf, Eva-Maria Pferschy-Wenzig, Robert Weis
Summary: Several 1-benzyl and 1,3-dibenzyl derivatives of tetrahydropyridinylidene salts with varying electron withdrawing substituents at the aromatic residues have been synthesized and investigated for their biological activities and cytotoxicity. Characterization of these compounds was carried out using FT-IR, HRMS and NMR spectroscopy.
MONATSHEFTE FUR CHEMIE
(2023)
Article
Polymer Science
Xianyuan Wu, Dan Xu, Mario De Bruyn, Gregor Trimmel, Katalin Barta
Summary: In this study, a family of bio-based polycarbonates (PC-MBC) has been described, which are based on a unique lignin-derived aliphatic diol (MBC) sustainably sourced from lignin oxidation mixture. The detailed structure analysis of these polycarbonates has been confirmed by a series of 2D NMR characterizations. The PC-MBC displayed a wide achievable T-g range of 117-174 degrees C and high T-d5% of >310 degrees C by variation of the ratio of the stereoisomers of MBC, offering great substitution perspectives towards a bisphenol-containing polycarbonates. Nonetheless, the presented PC-MBC polycarbonates were film-forming and transparent.
Article
Chemistry, Multidisciplinary
Xianyuan Wu, Mario De Bruyn, Gregor Trimmel, Klaus Zangger, Katalin Barta
Summary: Polyesters obtained from the polycondensation of lignin-derived bicyclic diol with cellulose-derived diesters showed high-performance properties and potential applications. The use of isomerically pure diol resulted in significant effects on the physical properties of the polyesters. Furthermore, the efficient depolymerization of the polyesters and conversion into high-performance jet fuel additives was demonstrated.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Efthymia Vakalopoulou, Daniel Knez, Marco Sigl, Gerald Kothleitner, Gregor Trimmel, Thomas Rath
Summary: Silver bismuth sulfide (AgBiS2) has shown impressive properties in thermoelectric and photovoltaic applications, and has the potential to replace toxic semiconductors. A new synthesis route using metal xanthates as precursors for AgBiS2 nanocrystals has been reported. The study revealed that the decomposition and formation of AgBiS2 nanocrystals can be initiated at room temperature by the ligand's amine functionality, even though the silver xanthate is insoluble in the solvent mixture.
Article
Chemistry, Physical
Peter Fuerk, Matiss Reinfelds, Ilie Hanzu, Theresa Hartl, Jana B. Schaubeder, Elena Zuccala, Heinz Amenitsch, Thomas Rath, Gregor Trimmel
Summary: Organic photovoltaics are a promising technology for sustainable energy conversion. By synthesizing high-permittivity active layer materials and optimizing them in a bilayer setup, we were able to prevent morphology-related efficiency losses in organic solar cells and increase their efficiency to 5.51%.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
T. Mairhofer, S. Arneitz, F. Hofer, C. Sommitsch, G. Kothleitner
Summary: Exploring the chemical micro- and nanostructure of metal alloys is crucial for understanding their physical properties. In this study, the influence of heat treatment on the macroscopic magnetic behavior of additive manufactured FeCrCo alloys is investigated. It is found that the heat treatment affects the nanostructure and ferromagnetic properties of the material. This research provides insights for tailoring manufacturing parameters to obtain desired functional materials.
JOURNAL OF MATERIALS SCIENCE
(2023)
Editorial Material
Chemistry, Multidisciplinary
Christian Slugovc, Gregor Trimmel
MONATSHEFTE FUR CHEMIE
(2023)
Article
Polymer Science
Carina Frank, Anita Emmerstorfer-Augustin, Thomas Rath, Gregor Trimmel, Manfred Nachtnebel, Franz Stelzer
Summary: Biobased and biodegradable polymers (BBDs), such as PHB and PHBV, are attractive alternatives to fossil-based plastic materials due to their environmental friendliness. However, their high crystallinity and brittleness pose a major challenge. In this study, the feasibility of using natural rubber (NR) as an impact modifier in PHBV blends was investigated. The results showed that NR-PHBV blends exhibit excellent material characteristics including high elasticity, durability, and biodegradability, making them interesting materials for various applications.
Article
Nanoscience & Nanotechnology
Thomas Rath, Jose M. Marin-Beloqui, Xinyu Bai, Astrid-Caroline Knall, Marco Sigl, Fernando G. Warchomicka, Thomas Griesser, Heinz Amenitsch, Saif A. Haque
Summary: Cu3BiS3 thin films were fabricated via annealing method and detailed insights into the film formation were obtained through X-ray scattering measurements. The films showed favorable optoelectronic properties for photovoltaic applications. Additionally, the introduction of an In2S3 interlayer improved the charge generation rate in heterojunctions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Reinhold Pommer, Robert Saf, Ralf Supplit, Armin Holzner, Harald Plank, Gregor Trimmel
Summary: This study reports a versatile and cost-effective manufacturing method for shape-memory polymers (SMPs) based on binary elastomer-thermoplastic blends. The SMPs showed efficient thermo-responsive dual-shape-memory and promising multi-shape-memory features, making them suitable for applications such as soft robotics or biomedical devices.
Article
Materials Science, Multidisciplinary
Peter Fuerk, Suman Mallick, Thomas Rath, Matiss Reinfelds, Mingjian Wu, Erdmann Spiecker, Nikola Simic, Georg Haberfehlner, Gerald Kothleitner, Barbara Ressel, Sarah Holler, Jana B. Schaubeder, Philipp Materna, Heinz Amenitsch, Gregor Trimmel
Summary: Y-series acceptors with improved permittivities were prepared via a synthetic route, leading to two new acceptors with higher relative permittivity. When blended with polymer PM6 in solar cells, the acceptors achieved efficiencies of 8.2% and 5.3% respectively. The morphological investigation revealed that the glycol modification and side chain positioning affected the crystallization behavior of the acceptors.
JOURNAL OF MATERIALS CHEMISTRY C
(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)
