Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 17
·10260-10268
·
IF 10.7
Yingfen Li,Xingye Chen,Runxi Wang,Nian Zhou,Fang Huang,Jun Zhao,Zhenghua Su,Shuo Chen,Guangxing Liang
In this study, Sb2S3 was introduced into the two-step selenization process to promote bottom grain growth and reduce the surface roughness of the Cu2ZnSn(S,Se)4 light-absorber layer. The introduction of Sb doping in Cu2ZnSn(S,Se)4 can passivate bulk and interface defects and a small conduction band offset (CBO) can be found, which facilitate the improvement of heterojunction carrier transport properties. Similarly, simulations illustrated that Sb doping improved device efficiency by controlling bulk and interface defects and band alignment. This optimized method facilitated the penetration of Sb, resulting in a high-quality CZTSSe absorber layer. Ultimately, the research culminated in a significant enhancement, yielding a solar cell with an impressive efficiency of 13.11%. These findings offer new possibilities for kesterite solar cells and advance the potential of CZTSSe materials in thin film photovoltaic applications.
研究领域:
材料科学
·
光伏技术
·
半导体物理
·
薄膜太阳能电池
·
无机功能材料
·
固态电子学
✓ 已验证
DOI
高影响因子
EcoMat
·
2021
·Vol. 3
·期 5
·e12134
·
IF 0
Weixia Lan,Jialu Gu,Shiwei Wu,Yan Peng,Min Zhao,Yingjie Liao,Tao Xu,Bin Wei,Liming Ding,Furong Zhu
Improved efficiency and stability of the organic solar cells (OSCs) are the critical considerations for practical applications. The interface between the interlayer and bulk heterojunction has recently been shown as one of the weak links associated with the degradation in the nonfullerene acceptor (NFA)-based OSCs. It shows that the removal of the interfacial chemical reactions between the 2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile (INCN) moieties in NFA and poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS) hole extraction layer (HEL) is desired for enhancing the device stability. In this work, we show that the use of a bilayer MoO 3 /antimonene HEL favors the operational stability in OSCs through maintaining a high built-in potential and suppression of an undesired interfacial reaction between INCN moieties in NFA and the PEDOT structures in PEDOT:PSS. A power conversion efficiency of 16.68% is also obtained for the OSCs with a bilayer MoO 3 /antimonene HEL, prepared using a blend system of PM6:Y6, demonstrating its suitability for high-performance OSCs.
研究领域:
材料科学
·
光伏技术
·
纳米材料
·
表面化学
·
器件物理
✓ 已验证
DOI
Advanced Materials Interfaces
·
2018
·Vol. 6
·期 3
·1801663
·
IF 4.834
Wentian Huang,Qingwei Zhou,Shaoqiang Su,Jing Li,Xubin Lu,Xingsen Gao,Xin Wang,Mingliang Jin,Guofu Zhou,Zhang Zhang,Junming Liu
Loading 2D layered transition metal dichalcogenides (TMDs) on p-type silicon photocathode is suitable for hydrogen production in solar-driven photoelectrochemical (PEC) water splitting. Similarly, various nanostructured TMDs exposing more active sites are widely explored for improving the PEC performances of composite photoelectrodes. Here, defect engineering using a controllable argon ion beam bombardment is presented on ReS 2 /Si photocathode. The atomic vacancy defects are introduced on the 2D ReS 2 to realize high-density active sites, which significantly enhance the solar-driven hydrogen evolution reaction performance of ReS 2 /Si photocathode. The highest photocurrent density of 18.5 mA cm −2 (at 0 V vs reversible hydrogen electrode) is achieved, under a simulated sun irradiation.
研究领域:
材料科学
·
光催化
·
能源化学
·
半导体器件
·
纳米科技
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Ranxi Liang,Chaozhu Shu,Anjun Hu,Minglu Li,Zhiqun Ran,Ruixin Zheng,Jianping Long
The sluggish oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) kinetics greatly limit the development of lithium-oxygen (Li-O 2 ) batteries. Therefore, developing efficient electrocatalysts with high stability to boost oxygen involved reactions is particularly important for promoting the application of Li-O 2 batteries. Here, CoSe 2 @NiSe 2 heterostructure with distinct heterogeneous interfaces was fabricated via deliberate interface engineering. The formation of heterogeneous interface promotes local fine atomic array distortion that can act as an additional active site of ORR/OER. In addition, CoSe 2 @NiSe 2 with a distinct heterogeneous interface is favorable for the formation of built-in electric field during charging/discharging to enable electrodes with fast electrical transfer rates and reaction kinetics. Synergistically, the additional active sites brought by the fine atomic array distortion are highly conducive to the reversible formation and decomposition of the product. Undoubtedly, batteries with CoSe 2 @NiSe 2 exhibit excellent discharge/charge capacity (3530.1 mA h g −1 and 3485.6 mA h g −1 ), low overpotential (1.21 V) and excellent electrochemical stability for over 1200 h.
研究领域:
材料科学
·
电化学
·
能源化学
·
纳米催化
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Yanchun Yang,Xiaojiao Kang,Lijian Huang,Song Wei,Daocheng Pan
Earth abundant Cu 2 ZnSn(S,Se) 4 (CZTSSe) has been considered as one of the most promising thin film solar cell absorber candidates. Here, we develop a facile water-based precursor solution approach for depositing high-efficiency Cu 2 ZnSn(S,Se) 4 thin film solar cells. In this environmentally friendly approach, inexpensive elemental Cu, Zn, Sn and S powders are used as the starting materials and are dissolved in the aqueous solution of thioglycolic acid and methylamine, forming a homogeneous precursor solution for depositing Cu 2 ZnSnS 4 nanocrystal thin film . As-deposited CZTS nanocrystal thin films are selenized to form the large-grain CZTSSe absorber layers . It was found that Na doping plays an important role in the formation of the extremely dense and flat CZTSSe absorber layer, and fill factor can be significantly improved for Na-doped CZTSSe solar cells, which lead to a photoelectric conversion efficiency of 6.96% with an open-circuit voltage of 378 mV, a short current density of 28.17 mA cm −2 , and a fill factor of 65.4%.
研究领域:
材料科学
·
新能源材料
·
半导体薄膜
·
光伏技术
·
无机功能材料
✓ 已验证
DOI
高影响因子
Solar RRL
·
2019
·Vol. 3
·期 5
·1800346
·
IF 0
Jiang Cheng,Rong Hu,Kun Wang,Xiang Meng,Ying Li,Xin Yang,Xiaoqing Liao,Lu Li,Kok Boon Chong
Antimony chalcogenide is a promising absorber material for photovoltaic (PV) cells because of its tunable band gap, strong optical absorption, earth-abundant, and nontoxic constituents. Here, a novel hydrazine-free approach for fabricating antimony chalcogenide films prepared via spray pyrolysis deposition with further selenylation, as well as high performance solar cells are reported. The fabricated antimony chalcogenide solar cells exhibits remarkably high open-circuit voltage ( V OC ) comparing with that of Sb 2 Se 3 and Sb 2 S 3 devices. The distribution of Se during the selenylation process via refering to the Fick's second law is discussed. The results show that the selenized absorber has tremendously improved absorbance for visible light and a cascade-type energy level from surface to bulk, resulting in an ideal energy level matching for p-n junction. By introducing an efficient buffer layer, the detrimental short-circuit is avoided by reducing the cracks. Finally, 4.57% of the power conversion efficiency (PCE) of the solar cell is achieved. Furthermore, a module with a large-scale active area of 21 cm 2 is successfully fabricated, which shows a PCE of 3.19%, and a V OC of 3.42 V. The present work suggests that the antimony chalcogenide solar cells are promising for industrial application.
研究领域:
材料科学
·
光伏技术
·
半导体器件
·
能源材料
·
薄膜制备
·
表面工程
·
器件物理
✓ 已验证
DOI
危险品化学品经营许可证（带存储）