Article
Materials Science, Multidisciplinary
Yung-Lin Chen, Yi-Cheng Lin, Wan-Yu Wu
Summary: In this study, the HiPIMS technology was used to deposit Mo back contact on polyimide substrates, resulting in a thin film with good conductivity and adhesion. The experimental parameters of HiPIMS were adjusted to improve the properties of the film, and it was found that HiPIMS coating technology has better conductivity and adhesion compared to traditional DC sputtering. This technology is particularly suitable for PI substrates.
Article
Chemistry, Physical
Seonghoon Jeong, Seung Sik Ham, Eun Pyung Choi, David J. Hwang, Hyeonggeun Yu, Won Mok Kim, Gee Yeong Kim, Jeung-hyun Jeong
Summary: Cu(In,Ga)Se2 (CIGS) is a promising candidate for flexible photovoltaics due to its high efficiency and flexibility. However, achieving high-efficiency CIGS solar cells on a flexible polyimide (PI) substrate is challenging. In this study, we applied indium tin oxide (ITO) instead of Mo as a back-contact (BC) layer to obtain crack-free CIGS modules with superior device performance. The ITO BC-based cells show potential for achieving high-efficiency and flexible CIGS solar modules.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jun-Shuai Gong, Zhi-Liang Wang, Hui-Wen Qu, Ding-Yong Cang
Summary: This paragraph discusses the fabrication of a flexible bandpass filter based on polyimide using self-metallization technology, covering a specific frequency range of WLAN. The filter demonstrates stable performance and capability to adapt to different states.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Dayoung Yoo, Mao Zhang, Changsoon Choi, Byungha Shin, Yoon-Hwae Hwang, Yangdo Kim, Dongyun Lee
Summary: The mechanical behavior and crack characteristics of GIGS films were studied, revealing higher fracture toughness than soda-lime glass, predominantly intergranular fracture, and the presence of Palmqvist radial and lateral cracks.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Hongji Yoon, Bong Ho Kim, Soon Hyeong Kwon, Dong Wook Kim, Young Joon Yoon
Summary: This study implemented an optoelectronic device comprising only PI, optimizing its photocharacteristics through electron-beam irradiation treatment to achieve higher light absorption and conductive properties. The PI photodetector exhibited a detectivity of 6.38 x 1010 Jones under laser illumination and maintained stability in mechanical characteristics through cyclic bending tests.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Qihua Huang, Yonglin Wang, Qing Zhang, Gaoqiang Xiang, Xiaoyan Han, Yingkui Yang
Summary: A polyimide-engineered bulk Na2Ti3O7 (NTO@PI) anode is proposed to enhance its structure and interface stability during cycling. The protective PI layer can prevent self-relaxation of discharged products and promote structural stability. Additionally, the PI layer inhibits side reactions at the NTO/electrolyte interface and prevents erosion of H2O when exposed to air. Moreover, the PI layer facilitates Na-ion transportation into the NTO lattice.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Hyun-Soo Jeon, Wenhui Yao, Kyeong-Hwan Kim, Jun-Hyung Sim, Young-Rae Cho
Summary: A flexible electrode material with good surface amphiphobicity and mechanical and chemical stability was fabricated using a simple process. The material consisted of a superhydrophobic and electrically conductive silver nanopillar array formed on a polyimide substrate. The material exhibited excellent durability and stability, making it a promising candidate for flexible electrode applications.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Juergen Guljakow, Walter Lang
Summary: Gold is the preferred conductive material for neural implants, and the traditional process involves using adhesive layers to prevent delamination. However, a high-power impulse magnetron sputtering (HIPIMS) process has been shown to allow gold deposition on polyimide without the need for adhesive layers. A scratch test demonstrated the sufficient adhesion between the gold and polyimide layers.
Article
Chemistry, Physical
Gao Qing, Jianping Ao, Yunxiang Zhang, Yongheng Zhang, Jiajia Guo, Guozhong Sun, Wei Liu, Fangfang Liu, Yi Zhang
Summary: The research demonstrates that pulse selenization can effectively inhibit the diffusion of gallium towards the back of CIGS and improve the gallium content on the CIGSe surface, increasing the number of defects in the CIGS film and thus enhancing the efficiency of solar cells.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xubin Zhang, Zhibin Zhao, Surong Zhang, Adila Adijiang, Tianran Zhao, Min Tan, Xueyan Zhao, Qihong Hu, Maoning Wang, Takhee Lee, Elke Scheer, Dong Xiang
Summary: The high current densities in electronic circuitry and the mechanical deformation in flexible electronic devices can lead to fractures in circuits. However, locating and repairing atomic-scale fractured circuits is currently not available. In this study, a method was developed to heal nanogaps on a polyimide-covered substrate using voltage sweeping. The reconnection of nanoelectrodes was achieved through oxygen plasma etching of the polyimide. By analyzing the surface topography and chemical binding structure, it was found that the plasma etching played a key role in immobilizing metal atoms and closing the nanogaps, providing a self-healing paradigm for fractured circuits.
Article
Materials Science, Multidisciplinary
Shixu Zhou, Jie Dong, Xiuting Li, Xin Zhao, Qinghua Zhang
Summary: In this study, a continuous surface metallization method for polyimide fibers was developed for electromagnetic shielding applications. The introduction of carboxyl groups onto the fiber surface enhanced the adsorption capacity and efficiency of nickel ions during the electroless metal deposition process, ensuring continuous fabrication. The resulting nickel-layer-coated polyimide fibers exhibited high conductivity and excellent electromagnetic shielding effectiveness.
ADVANCED FIBER MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Shitian Huang, Yizhuo Gao, Wenbo Luo, Lu Lv, Zijie Wei, Yuedong Wang, Dailei Zhu, Fei Huang, Bin Peng, Yao Shuai, Chuangui Wu, Wanli Zhang
Summary: In this study, a flexible single crystal LNO thin film was fabricated on a polyimide substrate using CIS technology and the BCB bonding method. Finite element method (FEM) simulation showed a surface acoustic wave resonator (SAWR) with a high Q factor. The SAWR strain sensors displayed good performance and a wider strain range compared to previous sensors.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Oliver Salomon, Erwin Lotter, Jan-Philipp Becker
Summary: Filling the P1 groove with an insulating material significantly improves the PID stability of CIGS modules, enhancing their performance and lifespan.
Article
Chemistry, Applied
Huanhuan Li, Yuxin Chen, Huiqin Chen, Yantao Wang, Jinlong Li, Yanping Zheng, Linlin Zhang
Summary: This study constructs a hybrid material composed of Co9S8_x, N-doped carbon foam seeded with Co nanoparticles (Co9S8_x@Co-NC), which enhances the charge transfer capability and ion diffusion efficiency by forming Mott-Schottky-like heterointerfaces and sulfur defects. The Co9S8_x@Co-NC composite exhibits impressive electrochemical performance in both Li-ion and Na-ion batteries, demonstrating fast surface-controlled redox kinetics, robust cycling stability, and good rate capability.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
S. Shi, L. Yao, P. Ma, Y. Jiao, X. Zheng, D. Ning, M. Chen, F. Sui, H. Liu, C. Yang, W. Li
Summary: This article reviews the current status and challenges of CIGS thin-film solar cells on flexible PI, as well as the recent progress and future prospects of improving the high temperature resistance and low thermal expansion of PI foils for high efficiency applications.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Thomas Paul Weiss, Shiro Nishiwaki, Benjamin Bissig, Romain Carron, Enrico Avancini, Johannes Lockinger, Stephan Buecheler, Ayodhya N. Tiwari
ADVANCED MATERIALS INTERFACES
(2018)
Article
Materials Science, Multidisciplinary
A. Urbaniak, M. Pawlowski, M. Marzantowicz, B. Mari, T. Sall
Article
Materials Science, Multidisciplinary
K. Wisniewski, A. Urbaniak, P. Zabierowski
Article
Materials Science, Multidisciplinary
Thomas Paul Weiss, Romain Carron, Max H. Wolter, Johannes Loeckinger, Enrico Avancini, Susanne Siebentritt, Stephan Buecheler, Ayodhya N. Tiwari
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2019)
Review
Chemistry, Physical
Romain Carron, Shiro Nishiwaki, Thomas Feurer, Ramis Hertwig, Enrico Avancini, Johannes Lockinger, Shih-Chi Yang, Stephan Buecheler, Ayodhya N. Tiwari
ADVANCED ENERGY MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Stefano Pisoni, Martin Stolterfoht, Johannes Lockinger, Thierry Moser, Yan Jiang, Pietro Caprioglio, Dieter Neher, Stephan Buecheler, Ayodhya N. Tiwari
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2019)
Article
Chemistry, Physical
Thomas Feurer, Romain Carron, Galo Torres Sevilla, Fan Fu, Stefano Pisoni, Yaroslav E. Romanyuk, Stephan Buecheler, Ayodhya N. Tiwari
ADVANCED ENERGY MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
A. Urbaniak, K. Macielak, N. Barreau, P. Szaniawski, M. Edoff
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2019)
Article
Materials Science, Multidisciplinary
Aniela Czudek, Aleksander Urbaniak, Alexander Eslam, Roland Wuerz, Malgorzata Igalson
Summary: The postdeposition treatment with potassium fluoride (KF-PDT) affects the bulk properties of CIGSe solar cells, not just the surface of the absorber. Both alkali metals impact the electrical properties of the entire CIGSe layer, with effects on grain boundary properties highlighted by changes in electrical conductivity and doping levels. Persistent photoconductivity is correlated with relaxed conductivity in both NaF- and KF-treated samples, indicating potential barriers at grain boundaries limiting electrical transport in CIGSe.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Physics, Applied
M. Igalson, A. Czudek
Summary: The electronic activity of defects and their impact on solar cell efficiency in Cu(In,Ga)Se-2 and CdTe materials is still a topic of interest and debate. This study discusses the results of electrical defect spectroscopy in these materials and proposes charged grain boundaries as a possible source for observed signatures in deep level spectra. It suggests using electrical nano-characterization methods combined with standard defect spectroscopy to unravel the role and origin of dominating defects.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Energy & Fuels
A. Urbaniak, A. Czudek, A. Eslam, R. Wuerz, M. Igalson
Summary: This work focuses on interpreting defect spectroscopy results in CIGS solar cells and provides a comprehensive analysis of experimental data. It discusses the challenges in interpreting the observed signals and the co-existing physical models in the CIGS community. The main contribution is the introduction of a new model that describes the results of admittance spectroscopy, explaining the characteristic features of the measured signals and their dependence on hole concentration and grain boundary barriers.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Physics, Applied
A. Czudek, A. Eslam, A. Urbaniak, P. Zabierowski, R. Wuerz, M. Igalson
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Energy & Fuels
Aniela Czudek, Aleksander Urbaniak, Alexander Eslam, Roland Wuerz, Malgorzata Igalson
IEEE JOURNAL OF PHOTOVOLTAICS
(2020)
Article
Chemistry, Physical
Jordi Sastre, Tzu-Ying Lin, Alejandro N. Filippin, Agnieszka Priebe, Enrico Ayancini, Johann Michler, Aybdhya N. Tiwari, Yaroslav E. Rornanyuk, Stephan Buecheler
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Chemistry, Physical
Shutao Wang, Kostiantyn V. Kraychyk, Alejandro N. Filippin, Roland Widmer, Ayodhya N. Tiwari, Stephan Buecheler, Maryna I. Bodnarchuk, Maksym V. Kovalenko
ACS APPLIED ENERGY MATERIALS
(2019)
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)
