CuInSe₂ thin-film solar cells with 7.72 % efficiency prepared via direct coating of a metal salts/alcohol-based precursor solution.
A simple direct solution coating process for forming CuInSe₂ (CIS) thin films was described, employing a low-cost and environmentally friendly precursor solution. The precursor solution was prepared by mixing metal acetates, ethanol, and ethanolamine. The facile formation of a precursor solution without the need to prefabricate nanoparticles enables a rapid and easy processing, and the high stability of the solution in air further ensures the precursor preparation and the film deposition in ambient conditions without a glove box. The thin film solar cell fabricated with the absorber film prepared by this route showed an initial conversion efficiency of as high as 7.72 %.
Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon, Korea.
Sejin
S
Ahn
Tae Hwa
TH
Son
Ara
A
Cho
Jihye
J
Gwak
Jae Ho
JH
Yun
Keeshik
K
Shin
Seoung Kyu
SK
Ahn
Sang Hyun
SH
Park
Kyunghoon
K
Yoon
D000085:Acetates / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D011211:Electric Power Supplies; D000431:Ethanol / Q000737:chemistry*; D019856:Ethanolamine / Q000737:chemistry; D007204:Indium / Q000737:chemistry*; D012643:Selenium / Q000737:chemistry*; D012993:Solar Energy; D012996:Solutions; D014835:Volatilization
D000085:Acetates; D012996:Solutions; C101793:copper indium diselenide; D007204:Indium; D000431:Ethanol; D019856:Ethanolamine; D003300:Copper; D012643:Selenium