Article
Energy & Fuels
Lasse Nasebandt, Byungsul Min, Christina Hollemann, Simon Huebner, Torsten Dippell, Robby Peibst, Rolf Brendel
Summary: The impact of phosphorus doping density in direct current-sputtered polysilicon layers on surface passivation and contact resistance has been studied. The experiment shows that using high phosphorus concentration can achieve high passivation quality. In addition, solar cells fabricated with phosphorus-doped sputtered POLO contacts achieved high cell efficiency and open-circuit voltage.
Article
Engineering, Electrical & Electronic
Namitha Dsouza, Ashish K. Singh, Rajesh Maurya, Rajesh Kanakala, Ramakrishna Madaka, Narendra Bandaru, Md. Seraj Uddin, Jatindra K. Rath
Summary: c-Si based carrier selective contact solar cells achieve high efficiency through silicon surface passivation. Atomic layer deposition (ALD) is used to deposit ultrathin Al2O3 passivation layers, known for their conformance and homogeneity. In this study, thermal ALD is used to deposit Al2O3 films on n-type CZ Si wafers, and post-deposition annealing in forming gas environments improves the passivation quality. The results demonstrate that the passivation obtained here is of device quality for CZ Si wafers and facilitates the development of high-efficiency Si heterojunction (SHJ) solar cells.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Energy & Fuels
Jayshree Bhajipale, Suchismita Mitra, Hemanta Ghosh, K. P. Sreejith, Anil Kottantharayil
Summary: Inefficient passivation of phosphorous diffused emitter is one of the limiting factors contributing to lower efficiency in advanced p-type silicon solar cells. Stack of SiO2 and SiNX with the former as an intermediate layer beneath SiNX provides better emitter passivation in comparison to SiNX film alone. Spray SiO2/SiNX is shown to be a viable alternative to thermal SiO2/SiNX stack for emitter passivation in silicon solar cells.
Article
Energy & Fuels
H. P. Yin, W. S. Tang, J. B. Zhang, W. Shan, X. M. Huang, X. D. Shen
Summary: The primary challenge to the industrial application of n-type silicon solar cells is their relatively complicated process flow compared to p-type cells. However, by introducing a simple processing sequence and selective BSF structure, the conversion efficiency of the cells can be significantly improved. This paper demonstrates an approach to fabricate n-type silicon solar cells with a conversion efficiency of 21.7% in batches with tight efficiency distribution.
Article
Energy & Fuels
Malik Abdul Rehman, Minjae Kim, Sachin A. Pawar, Sewon Park, Naila Nasir, Dong-eun Kim, Muhammad Farooq Khan, Van Huy Nguyen, Akendra Singh Chabungbam, Yongho Seo, Takeaki Sakurai, Seung-Hyun Chun, Do Hyoung Koo, Chul-Ho Lee, Seong Chan Jun, Hyung-Ho Park
Summary: Transition metal dichalcogenide (TMDC) materials are promising candidates for 2D solar cell devices due to their easy integration, wide band gap ranges, and high absorption coefficients. In this study, a wet transfer process with thermal release tape is used to simplify the fabrication steps of 2D tungsten diselenide (WSe2) based solar cell devices. The simplified process reduces production costs and improves yield. Additionally, the use of an aluminum oxide (Al2O3) antireflective coating on the WSe2/Si junction demonstrates a significant improvement in power conversion efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Energy & Fuels
Ying-Yuan Huang, Young-Woo Ok, Keeya Madani, Wookjin Choi, Ajay Upadhyaya, Vijay Upadhyaya, Brian Rounsaville, Vinodh Chandrasekaran, Ajeet Rohatgi
Summary: Understanding and optimizing ion-implanted boron emitters combined with screen printed contacts can lead to very low recombination current density and high-efficiency solar cells with rear poly-Si/SiO2 passivated contacts. By engineering emitter profiles and dielectric passivation, as well as optimizing paste chemistry and firing conditions, it is possible to reduce recombination under metal contacts and in passivated regions, ultimately improving overall efficiency potential.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Review
Engineering, Electrical & Electronic
Sudipta Banerjee, Mukul K. Das
Summary: This article reviews the prospects of aluminium oxide as a surface passivation material and addresses associated process technologies. Other passivation materials and their limitations are discussed, along with relevant deposition techniques and their aspects. Al2O3 deposited by Radio Frequency sputtering is found to be one of the best deposition techniques due to its low cost and high deposition rate.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Seira Yamaguchi, Sachiko Jonai, Kyotaro Nakamura, Kazuhiro Marumoto, Yoshio Ohshita, Atsushi Masuda
Summary: This study investigates the effects of SiO2 layers on polarization-type PID in solar cells, highlighting the important role of highly insulating layers such as SiO2 in PID occurrence. Additionally, it demonstrates that degradation in n-type cells is greater and saturates faster than in p-type cells, consistent with a model based on charge accumulation at K centers in SiNx layers.
Article
Chemistry, Multidisciplinary
Seira Yamaguchi, Sachiko Jonai, Kyotaro Nakamura, Kazuhiro Marumoto, Yoshio Ohshita, Atsushi Masuda
Summary: This study investigates the effects of SiO2 layers on polarization-type potential-induced degradation (PID) in front-emitter p-type c-Si solar cells, and compares the PID behavior between p-type and n-type cells. The results show that SiO2 layers play a crucial role in polarization-type PID, and degradation is greater and saturates faster in n-type cells.
Article
Energy & Fuels
Christina Hollemann, Michael Rienacker, Anastasia Soeriyadi, Chukwuka Madumelu, Felix Haase, Jan Krugener, Brett Hallam, Rolf Brendel, Robby Peibst
Summary: The stability of the passivation quality of poly-Si on oxide junctions against high-temperature screen-print firing processes is crucial. Research indicates that thermal stress and blistering are the root causes of the increase in recombination current density and interface state density. Postfiring annealing can help improve passivation quality.
PROGRESS IN PHOTOVOLTAICS
(2022)
Article
Engineering, Electrical & Electronic
Ping Yang, Xiangbo Zeng
Summary: Various microstructure hydrogenated silicon was used to passivate n-type silicon nanowires and core/shell solar cells, with differences in photoluminescence spectroscopy observed between SiNWs and passivated SiNWs. The improved performance of core/shell SiNWs solar cells was attributed to reduced surface defects through intrinsic Si:H layer passivation, with a-Si:H layer passivation showing better results compared to mu c-Si:H layer, mainly due to different microstructures, especially hydrogen-terminated.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Abigail R. Meyer, Rohan P. Chaukulkar, Noemi Leick, William Nemeth, David L. Young, Paul Stradins, Sumit Agarwal
Summary: In this study, the atomistic-level mechanism for the chemical passivation of the monocrystalline Si surface with thermally annealed Al2O3 was investigated using in situ infrared spectroscopy and photoconductance decay measurements. The results showed that surface Si-H bonds are preserved after the ALD of Al2O3 on H-terminated Si, and restructuring occurs at the c-Si/Al2O3 interface during annealing to form interfacial SiOx. Isotope labeling was used to differentiate interfacial SiD bonds on the c-Si surface from H incorporated in Al2O3, and no net migration of atomic H or D from Al2O3 to the c-Si/Al2O3 interface was observed within the sensitivity of the infrared setup. Passivation studies were also conducted on c-Si/SiO2/Al2O3 stacks, revealing that an O-2-containing atmosphere led to the best surface chemical passivation.
ACS APPLIED NANO MATERIALS
(2021)
Article
Multidisciplinary Sciences
Ramy El-Bashar, Mohamed Hussein, Salem F. Hegazy, Yehia Badr, B. M. A. Rahman, Kenneth T. Grattan, Mohamed Farhat O. Hameed, Salah S. A. Obayya
Summary: The electrical characteristics of quad-crescent-shaped silicon nanowire solar cells were analyzed numerically to optimize performance, resulting in increased optical absorption and power conversion efficiency. The core-shell junction design showed an improvement of approximately 80% in conversion efficiency due to the high back surface field layer, with minimal impact from nanowire surface recombination compared to the axial junction.
SCIENTIFIC REPORTS
(2022)
Article
Computer Science, Interdisciplinary Applications
Sebastian Tepner, Linda Ney, Marius Singler, Maximilian Pospischil, Kenji Masuri, Florian Clement
Summary: This study presents an optimization of screen architectures using an evolutionary algorithm to address the challenges faced in the PV production process and meet the demand for fine-line printing. The results predict mesh configurations with high mesh counts and wire diameters in order to enable printing below 10 μm.
JOURNAL OF COMPUTATIONAL SCIENCE
(2021)
Article
Energy & Fuels
Roel J. Theeuwes, Jimmy Melskens, Wolfhard Beyer, Uwe Breuer, Lachlan E. Black, Wilhelmus J. H. Berghuis, Bart Macco, Wilhelmus M. M. Kessels
Summary: Passivation of semiconductor surfaces is crucial for enhancing device performance. Thin-film stacks of phosphorus oxide (POx) and aluminum oxide (Al2O3) have shown excellent passivation on various semiconductor surfaces. The POx/Al2O3 stacks possess unique properties and stability, making them promising for high-aspect-ratio structures.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Energy & Fuels
Kwan Hong Min, Jeong-Mo Hwang, Eunwan Cho, Hee-eun Song, Sungeun Park, Ajeet Rohatgi, Donghwan Kim, Hae-Seok Lee, Yoonmook Kang, Young-Woo Ok, Min Gu Kang
Summary: Field-effect passivation was achieved by injecting negative charges into SiO2/SiNx stack using a plasma charge injection technique. The high injected negative charge density and significant efficiency improvements in solar cells suggest that this low-cost alternative method has the potential to replace expensive Al2O3 processes.
PROGRESS IN PHOTOVOLTAICS
(2021)
Article
Energy & Fuels
Keeya Madani, Ajeet Rohatgi, Brian Rounsaville, Min-Gu Kang, Hee-Eun Song, Young-Woo Ok
Summary: Carrier selective poly-Si/SiOx contacts are highly competitive for next generation high-efficiency Si solar cells and Si-based tandem cells, but careful attention should be paid to the stability of the front contacts during high temperature firing process.
IEEE JOURNAL OF PHOTOVOLTAICS
(2021)
Article
Energy & Fuels
Nadia Cerone, Francesco Zimbardi
Summary: Experimental datasets of gasification on various lignocellulosic feedstocks were used to correlate gasifying agents flow with the performance of updraft gasification. The use of steam was found to stabilize the process and adjust the H-2/CO ratio in syngas, leading to improved energy efficiency. Different operational conditions were identified to achieve the desired products effectively.
Article
Engineering, Electrical & Electronic
Yuguo Tao, Anna Erickson
Summary: The Al2O3 thin film synthesized by plasma-assisted ALD provides superior passivation of p-type Si surfaces, leading to improved performance of SiPMs, especially for ultraviolet-sensitive applications. The film's superiority lies in its low defect density and high density of built-in negative charges, which contribute to enhancing the quantum efficiency and photo-detection efficiency of the SiPM.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2022)
Article
Multidisciplinary Sciences
Yuguo Tao, Arith Rajapakse, Anna Erickson
Summary: We have demonstrated an advanced light trapping feature by developing multi-layer antireflection coatings and a textured silicon surface, which significantly reduces the reflection of faint light and increases the photon detection efficiency. This advanced design feature offers the back-illuminated silicon photomultiplier broader application opportunities.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Christopher Chen, Jeong-Mo Hwang, Young-Woo Ok, Wook-Jin Choi, Vijaykumar Upadhyaya, Brian Rounsaville, Ajeet Rohatgi
Summary: The study discusses a negatively charged oxide-nitride-oxide stack for field-effect passivation of crystalline silicon solar cells and investigates the charge stability, injection and loss mechanisms, optimal stack recipes, and decay trends of the optimized stack.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Energy & Fuels
Sagnik Dasgupta, Young-Woo Ok, Vijaykumar D. Upadhyaya, Wook-Jin Choi, Ying-Yuan Huang, Shubham Duttagupta, Ajeet Rohatgi
Summary: The efficiency potential of DS-TOPCon solar cells can be improved by patterning the front poly-Si layer using a nanosecond UV laser to reduce parasitic absorption. Subsequent PECVD SiNx C deposition can help recover the passivation quality. The full area J(0) remains low due to the patterning effect.
IEEE JOURNAL OF PHOTOVOLTAICS
(2022)
Article
Engineering, Chemical
Francesco Zimbardi, Egidio Viola, Giuseppe Arcieri, Vito Valerio, Massimo Carnevale
Summary: A new method to detoxify steam-exploded substrates by evaporating low-weight acids and aldehydes is reported, which leaves all the sugars in the solid matrix and prevents cellulose hornification, resulting in a higher yield of bioethanol.
Article
Physics, Multidisciplinary
Young-Woo Ok, Jong-Hee Kim, Vijaykumar D. Upadhyaya, Ajeet Rohatgi, Chang-Hee Hong, Chel-Jong Choi
Summary: The contact resistance and sheet resistance of a screen-printed fire-through Ag/Al paste metallization to the implanted B emitters of n-type crystalline Si solar cells were investigated. It was found that, for B emitters implanted with a B dose of > 2 x 10(15) cm(-2), the Ag/Al paste contacts showed very low contact resistance and sheet resistance. The analysis also revealed an increase in carrier concentration of B emitter surface associated with additional doping through the Al diffusion from the Ag/Al paste into B emitter.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2023)
Article
Energy & Fuels
Arpan Sinha, Sagnik Dasgupta, Ajeet Rohatgi, Mool C. C. Gupta
Summary: Carrier selective contacts Si solar cells based on tunnel oxide passivated contact (TOPCon) have achieved an efficiency of over 25% and are planned for large-scale production. Rapid thermal annealing (RTA) in air showed fewer hydrogen-induced blisters compared to N-2 atmosphere. Optical radiation and heat during RTA had a significant impact on the degradation of iV(oc). Various characterizations revealed the degradation mechanism under different atmospheres and the effect of high-intensity light. Air RTA at 825°C was found to be optimal for TOPCon solar cells.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Energy & Fuels
Pradeep Padhamnath, Wook-Jin Choi, Gabby De Luna, John Derek Arcebal, Ajeet Rohatgi
Summary: We introduce SERIS' biPolyTM technology platform for large-area (M2), n-type rear-junction silicon solar cells, which utilize selective poly-Si/SiOx based passivated contacts on the front side and full-area poly-Si/SiOx contacts on the rear. The selective poly-Si 'fingers' are formed using an industrial ink-jet masking process followed by wet-chemical etching. The metal contacts are formed by an industrial screen-printing process using high-temperature fire-though metal pastes. With excellent passivation on the front and rear surfaces, the solar cells achieve iVoc values between 720 mV and 730 mV on unmetallized cells and 22% efficiency on cells with selective poly-Si fingers on the front. By developing a model for biPolyTM solar cells and conducting a detailed loss analysis and simulations, the study identifies the different loss components and suggests device modifications for efficiency improvements.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Proceedings Paper
Energy & Fuels
Ying-Yuan Huang, Aditi Jain, Wook-Jin Choi, Keeya Madani, Young-Woo Ok, Ajeet Rohatgi
Summary: Device modeling was used to propose a solar cell structure with rear junction double-side passivated contacts, achieving over 25% efficiency. The design includes full area p-TOPCon on the rear and selective area n-TOPCon under the front grid, enabling the use of thicker TOPCon on the front without compromising transport or carrier collection. This approach eliminates the need for heavy doping in the front field region and maintains high V-OC due to high-quality Si surface passivation by Al2O3/SiN.
2021 IEEE 48TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
(2021)
Proceedings Paper
Energy & Fuels
Jeong-Mo Hwang, Christopher Chen, Young-Woo Ok, Wookjin Choi, Ajay Upadhyaya, Vijay Upadhyaya, Brian Rounsaville, Ajeet Rohatgi
Summary: The study found that the nitrogen-to-silicon atomic ratio in SiNx plays a significant role in light-induced charge loss, with significant improvements in charge loss with increasing x value, and the best result showing that a sufficient amount of charge can be maintained over the module's lifetime.
2021 IEEE 48TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
(2021)
Proceedings Paper
Energy & Fuels
Andre Chavez, Brian Rummel, Nicolas Dowdy, Sang M. Han, Nick Bosco, Brian Rounsaville, Ajeet Rohatgi
Summary: By formulating a carbon nanotube additive for commercial screen printed silver pastes, the performance of metal matrix composites can be improved, enhancing the fracture toughness and electrical gap-bridging capability of metallization. Optimizing the composite metallization can enhance printability and increase the modulus of toughness of the metallization.
2021 IEEE 48TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
(2021)
Proceedings Paper
Energy & Fuels
Ujjwal K. Das, Tasnim K. Mouri, Robert Theisen, Young W. Ok, Ajay Upadhyaya, Ajeet Rohatgi
Summary: Passivation of n-type and p-type textured Cz Si wafers diffused with phosphorus and boron, respectively, are achieved using gas phase H2S reaction and quinhydrone-methanol (QH-MeOH) solution. The quality of passivation strongly depends on the diffusion type and passivation method, with H2S reaction passivating n-type diffused surface as effectively as Si oxide/silicon nitride stack, and QH-MeOH passivating p-type diffused surface to the same level as aluminum oxide/silicon nitride stack.
2021 IEEE 48TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
(2021)
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)
