Over 12% efficient low-bandgap CuIn(S, Se)2 solar cells with the absorber processed from aqueous metal complexes solution in air
- Resource Type
- Authors
- Jingjing Jiang; Yuancai Gong; Hao Xin; Shaotang Yu; Weibo Yan; Sanping Wu; Wei Huang
- Source
- Nano Energy. 62:818-822
- Subject
- Aqueous solution
Materials science
Renewable Energy, Sustainability and the Environment
Chalcopyrite
Band gap
Metal ions in aqueous solution
Energy conversion efficiency
chemistry.chemical_element
02 engineering and technology
Direct bonding
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
law.invention
chemistry
Chemical engineering
law
visual_art
Solar cell
visual_art.visual_art_medium
General Materials Science
Electrical and Electronic Engineering
0210 nano-technology
Indium
- Language
- ISSN
- 2211-2855
Fabrication of the absorber from environmentally benign solution in ambient air is the ideal approach to address the cost and environmental issues that limit chalcopyrite solar cell commercialization. Here, we report CuIn(S,Se)2 (CISSe) solar cells with the absorber fabricated from an aqueous solution using metal thiourea complexes CuTU3Cl and InTU3Cl3 as precursors. The direct bonding of all metal ions with sulphur in the complexes prevents the hydrolysis of indium and promote the formation of metal sulphide upon thermal annealing. High quality low band gap CISSe absorber material with film thickness penetrating large grains and smooth surface is fabricated from the simple aqueous solution in air. CISSe solar cell with a power conversion efficiency of 12.3% is achieved.