Article
Engineering, Electrical & Electronic
Ha Kyung Park, Yunae Cho, Juran Kim, Sammi Kim, Sungjun Kim, Jeha Kim, Kee-Jeong Yang, Dae-Hwan Kim, Jin-Kyu Kang, William Jo
Summary: The effect of stress on flexible CZTSSe photovoltaic devices and its influence on the electronic structure and electrical properties were investigated. The inclusion of Na in CZTSSe resulted in less degraded carrier transport, and the reduction of local open-circuit voltage was greater in convex bending compared to concave bending.
NPJ FLEXIBLE ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Brajendra S. Sengar, Vivek Garg, Amitesh Kumar, Praveen Dwivedi
Summary: Perovskite-based planar homojunction solar cells show higher efficiency and performance advantages, reducing recombination losses through the built-in electric field. Simulation analysis reveals that device performance depends on the thickness and defects of the perovskite layer, with interface defects influencing performance. By designing homojunction devices with perovskite, higher efficiencies have been achieved.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Physics, Condensed Matter
Aykut Arslan, Kenan Ozel, Abdullah Atilgan, Abdullah Yildiz
Summary: The luminescent solar concentrators (LSCs) are a promising solution to improve energy efficiency in buildings. These devices utilize semi-transparent glazing systems to harness solar radiation, and can be used in building-integrated photovoltaic systems or as interior furniture components. In this study, thin-film LSC devices were fabricated and characterized using different light guides containing Eosin Y, Safranin O dyes, and a two-dye mixture. The two-dye mixture LSC showed a higher power conversion efficiency of 0.22% under indoor illumination conditions, compared to single-dye LSCs. The study also investigated the dependence of external solar parameters on incident light power, with the two-dye mixture providing the best description. This research may guide the future use of two-dye mixture thin-film LSC devices for indoor applications.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Energy & Fuels
Jongsung Park, Minwoo Lee, Vijay Karade, So Jeong Shin, Hyesun Yoo, Hongjae Shim, Kuldeep Singh Gour, Dongmyung Kim, Jiseon Hwang, Donghyeop Shin, Jan Seidel, Jong H. Kim, Jaesung Yun, Jin Hyeok Kim
Summary: In this study, the strategic approach of substituting silver (Ag) and germanium (Ge) cations to cure deep-level defects in kesterites showed significant improvement in device performance under low light intensity conditions. Specifically, the Ag-doped CZTSSe device exhibited the highest performance levels, attributed to reduced energy level of deep-level defects and improved carrier separation process.
Article
Chemistry, Physical
Jingling Liu, Hang Cai, Xinyu Wu, Sheng Liu, Ying Xue, Xinsheng Liu, Ke Cheng, Zuliang Du
Summary: Bifacial flexible solar cells offer high energy generation and multidirectional light irradiation, making them ideal for advanced applications like building-integrated photovoltaics. A new electrodeposition process has been proposed to fabricate symmetrical bifacial Cu2ZnSnSe4 (CZTSe) solar cells, resulting in high efficiencies and low costs and time. This breakthrough provides a cost-effective strategy for green-processed material fabrications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Jingling Liu, Hang Cai, Xinyu Wu, Sheng Liu, Ying Xue, Xinsheng Liu, Ke Cheng, Zuliang Du
Summary: Bifacial flexible solar cells, particularly those using the electrodeposition process, show great potential in advanced applications. In this study, a symmetrical bifacial Cu2ZnSnSe4 (CZTSe) solar cell was fabricated through a green electrodeposition process, achieving high efficiencies on both sides. This offers a cost-effective strategy for green-processed material fabrications and provides insights for further efficiency improvements.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Electrical & Electronic
Luanhong Sun, Wei Wang, Lingyun Hao, Zhichao Jia, Yijie Zhao, Guowei Zhi, Hanyu Yao
Summary: Synthesizing Cu2CdxZn1-xSn(S,Se)(4) (CCZTSSe) absorber through selenizing Cd2+ treated CZTS precursor significantly increases the grain size from nano to micron level, leading to enhanced device performance. The improved heterojunction characteristic with CdS buffer layer in CCZTSSe prevents carrier recombination caused by interface state defects, resulting in an optimized device efficiency of 4.38% for x = 0.07.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Review
Chemistry, Multidisciplinary
Michael D. K. Jones, James A. Dawson, Stephen Campbell, Vincent Barrioz, Lucy D. Whalley, Yongtao Qu
Summary: Developing effective device architectures for energy technologies requires understanding the behavior at interfaces between multiple materials. Efficient charge transport across these interfaces is essential for high conversion efficiency in solar cells. Various methods, from composition-based approaches to continuum device models and atomistic models, can be used to simulate interfaces. However, the complex nature of heterojunction interfaces poses challenges for theory and simulation.
FRONTIERS IN CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
Afrasyab Khan, Aiyeshah Alhodaib, Kuo-Jui Wu, Ming-Lang Tseng
Summary: A coupled opto-electro-thermal model was developed to study the impact of heat generation and dissipation on the performance of CZTSSe thin-film solar cells. The simulation results showed the effects of different heat generation factors on the current and voltage of the cells.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Wenbo Lu, Zongbao Li, Mingjie Feng, Hui-Juan Yan, Bin Yan, Liyan Hu, Xing Zhang, Shunchang Liu, Jin-Song Hu, Ding-Jiang Xue
Summary: Elemental selenium has regained attention as a potential photovoltaic material due to its wide bandgap, non-toxic composition, and environmental stability. By modifying its wettability and understanding its air stability mechanism, researchers have successfully fabricated efficient selenium solar cells.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Min Qian, Xiaojun Mao, Min Wu, Zhangyi Cao, Qing Liu, Lijie Sun, Yang Gao, Xiaoyang Xuan, Yu Pan, Yueping Niu, Shangqing Gong
Summary: This study developed a flexible triple-junction GaAs thin-film solar cell with a high photoelectric conversion efficiency, using a transparent POSS polyimide sealing film to address the issues of weight, rigidity, and space occupation of current solar cells on spacecrafts. Systematic space irradiation tests were conducted on the transparent POSS film, demonstrating its potential advantages in flexibility, lightweight, and integration.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Physics, Multidisciplinary
H. A. Mohamed, Y. A. Taya, Sh S. Ali, W. S. Mohamed
Summary: This research utilized an optical and electrical model to examine the impact of optical and recombination losses on the short circuit current density, J(sc), and conversion efficiency of thin-film solar cells based on n-CdS/p-CZTSSe. By analyzing the optical properties of the components, the amount of light lost due to absorption and reflection was calculated. The study found that the use of an antireflection coating reduced optical losses by up to 20% and that the width of the depletion layer had a significant impact on J(sc) value. Most incoming photons were absorbed by a 3-4μm thick CZTSSe layer, resulting in low recombination losses of 16%. An efficiency of 14% was achievable with reasonable parameter values.
Article
Chemistry, Physical
Siwon Oh, Soo Yeon Lim, Dae-Ho Son, Jin-Kyu Kang, Hyesun Yoo, Dae-Hwan Kim, Hyeonsik Cheong
Summary: This study investigated the influence of the SnSe2 secondary phase on the performance of a solar cell. The research found that even with a small amount, the SnSe2 secondary phase has a critical impact on the characteristics of the solar cell. Controlling the formation of the SnSe2 secondary phase is identified as a crucial factor in obtaining high-efficiency CZTSSe solar cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Kuldeep Singh Gour, Vijay C. Karade, Minwoo Lee, Jun Sung Jang, Eunae Jo, Pravin Babar, Hongjae Shim, Jae Sung Yun, Jongsung Park, Jin Hyeok Kim
Summary: This study demonstrates a potential approach to improve the performances of CZTSSe thin-film solar cells through a combination of back-interface passivation and doping, resulting in enhanced short-circuit current density, fill factor, and power conversion efficiency.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Kuldeep Singh Gour, Vijay C. Karade, Minwoo Lee, Jun Sung Jang, Eunae Jo, Pravin Babar, Hongjae Shim, Jae Sung Yun, Jongsung Park, Jin Hyeok Kim
Summary: This study developed a strategic approach to improve the device performances of CZTSSe solar cells by combining back-interface passivation and doping. The passivation of the back interface and the doping of a germanium nanolayer improved the grain growth, reduced the thickness of harmful layers, improved the absorber bulk quality, suppressed defects, and reduced nonradiative carrier recombination losses. As a result, the short-circuit current density, fill factor, and power conversion efficiency of the devices significantly increased.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hui Deng, Yingshun Cheng, Zekun Chen, Xiao Lin, Jionghua Wu, Qiao Zheng, Caixia Zhang, Shuying Cheng
Summary: This study develops flexible substrate-structured antimony sulfide (Sb2S3) solar cells and improves their performance through back interfacial selenization. The inclusion of a 20 nm MoSe2 layer between the Sb2S3 film and Mo foil improves interfacial energy band alignments and induces the [hk1]-orientation of the Sb2S3 film, resulting in defect passivation and enhanced carrier transport capacity.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Energy & Fuels
Weihao Xie, Qiong Yan, Quanzhen Sun, Yifan Li, Caixia Zhang, Hui Deng, Shuying Cheng
Summary: Flexible Cu2ZnSn(S, Se)(4) (CZTSSe) solar cells have the advantages of nontoxicity and low cost, showing great commercial potential in wearable devices, indoor photovoltaics, and building-integrated photovoltaics. However, the performances of flexible CZTSSe devices still faces a huge gap on the commercialization level. This article summarizes the development and challenges of flexible CZTSSe devices, and explores possible strategies.
Article
Nanoscience & Nanotechnology
Yumei Zhou, Wangyang Li, Yonghui Xie, Liying Deng, Bingyuan Ke, Yijia Jian, Shuying Cheng, Baihua Qu, Xinghui Wang
Summary: A quasi-solid-state planar zinc-ion cell was developed with a vertical graphene film as an effective conductive modification layer, exhibiting advantages such as uniform zinc deposition/stripping, accelerated charge transport, and enhanced adhesion between active materials and current collectors. It showed high energy and power density as well as good cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Liying Deng, Wangyang Li, Jie Sun, Xinghui Wang, Qing Zhang, Chang Lin, Kui Pan, Qun Yan, Shuying Cheng
Summary: This study found that temperature is the key factor for fluorophlogopite mica to promote the growth of large-sized 2D materials as an alkali metal ion source. Variable temperature experiments revealed that fluorophlogopite mica can successfully incorporate alkali metal ions into the growth of large-sized 2D materials at high temperatures, resulting in highly crystalline MoO2 with a larger size compared to those without fluorophlogopite mica.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Yunda Lai, Tengjun Yang, Yang Yang, Wangyang Li, Yonghui Xie, Shuying Cheng, Li Qiao, Xinghui Wang
Summary: A Si@CNFs interlayer with three-dimensional porous and conductive structure is used to improve the cycling stability and energy density of lithium metal batteries by regulating lithium deposition behaviors and buffering volume changes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Renming Deng, Bingyuan Ke, Yonghui Xie, Shoulin Cheng, Congcong Zhang, Hong Zhang, Bingan Lu, Xinghui Wang
Summary: Thin-film all-solid-state lithium-sulfur (TFLSBs) batteries were successfully fabricated using vertical graphene nanosheets-Li2S (VGsLi(2)S) composite thin-film cathode, lithium-phosphorous-oxynitride (LiPON) thin-film solid electrolyte, and Li metal anode. The solid-state Li-S system with an unlimited Li reservoir fundamentally eliminated the shuttle effect and maintained a stable VGs-Li2S/LiPON interface, demonstrating excellent long-term cycling stability and high temperature tolerance. This study presents a new development strategy for secure and high-performance rechargeable all-solid-state thin-film batteries.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Juan Ao, Yonghui Xie, Yunda Lai, Ming Yang, Jing Xu, Fan Wu, Shuying Cheng, Xinghui Wang
Summary: In this study, a hierarchically porous membrane consisting of CoSe2 nanoparticle-decorated carbon nanofibers containing carbon nanotubes (CoSe2@CNF/CNT) is constructed as a self-supported sulfur host for Li-S batteries. The modified CoSe2 nanoparticles serve as chemical trappers and electrocatalysts, enhancing the redox kinetics to inhibit the shuttle effect. This work offers a feasible approach to designing multi-functional sulfur hosts for high-energy-density Li-S batteries.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenyi Wu, Jinling Yu, Yong-Hai Chen, Yu Liu, Shuying Cheng, Yunfeng Lai, Jie Sun, Hai Zhou, Ke He
Summary: In this study, helicity-dependent photocurrent (HDPC) was investigated in Bi2O2Se nanosheets. It was found that HDPC originates from surface states with C(s) symmetry in Bi2O2Se, which can be attributed to the circular photogalvanic effect (CPGE) and circular photon drag effect (CPDE). Furthermore, effective tuning of HDPC in Bi2O2Se by ionic liquid gating was demonstrated, indicating the tunability of the spin splitting of the surface electronic structure. The large HDPC in Bi2O2Se nanosheets and its efficient electrical tuning suggest their potential as a platform for opto-spintronic devices.
Article
Optics
Hui Deng, Yubin Kang, Yi Jia, Zekun Chen, Weihuang Wang, Yong Xia, Yunfeng Lai, Shuying Cheng
Summary: Antimony sulfide (Sb2S3) photodetectors have great potential in commercial applications and their performances are affected by photocarrier distribution and recombination. The gate-controlled Sb2S3 thin film photodetector is fabricated using the vacuum method on a TiO2/SiO2/Si substrate. The device achieves effective regulation through gate voltages and can realize logic outputs by the signal inputs of illumination and gate voltage.
Article
Chemistry, Multidisciplinary
Jing Xu, Juan Ao, Yonghui Xie, Yumei Zhou, Xinghui Wang
Summary: Beaded nanofibers consisting of carbon and CoSe2 nanoparticles were prepared and showed improved electrochemical performance in Li-S batteries, thanks to their physical adsorption and chemical catalysis effects. The CoSe2/C BNFs-S cathode demonstrated high reversible discharge specific capacity and excellent cycle stability.
Article
Chemistry, Physical
Yonghui Xie, Wenrui Zheng, Juan Ao, Yeqing Shao, Xing Huang, Hong Li, Shuying Cheng, Xinghui Wang
Summary: A unique Ni-doped CoSe2 nanoparticle decorated bilayer carbon (Ni-CoSe2/BC) structure is synthesized for both the sulfur cathode and lithium anode, which effectively inhibits the shuttle effect and induces dendrite-free lithium deposition. The Ni-CoSe2/BC material shows high discharge capacity and long cycle life, providing insights for the practical application of lithium-sulfur batteries.
ENERGY STORAGE MATERIALS
(2023)
