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CuInS2 Quantum Dot-Sensitized Solar Cells Fabricated via a Linker-Assisted Adsorption Approach
Wang Nan1,2; Liang Zhu-Rong2,3; Wang Xin1,2; Xu Xue-Qing2,3; Fang Jun1; Wang Jun-Xia2,3; Guo Hua-Fang2,3
AbstractColloidal chalcopyrite CuInS2 (CIS) quantum dots (aDs) were synthesized using copper(I) iodine (Cul) and indium(III) acetate (InAc3) as metal cationic precursors, and dodecanethiol (DDT) as the sulfur source and solvent. The microstructure and optical properties of the prepared CIS QDs were characterized by X-ray diffraction (XRD), Raman spectroscopy, high-resolution transmission electron microscopy (HRTEM), and UV-Vis absorption spectroscopy. The results showed that the CIS consisted of chalcopyrite phase and exhibited Cu-Au ordering. With prolonged reaction time, the grain sizes of the QDs became larger and the absorption edges of the CIS QDs showed a red-shift owing to the size-induced quantum confinement effect. For the first time, DDT-capped CIS QDs with narrow size distribution were connected to the inner surface of mesoporous TiO2 films via a thioglycolic acid (TGA)-assisted adsorption approach, which was simple and easy to carry out. The adsorption behaviors of both TGA and the CIS QDs on the TiO2 films were detected by attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The results indicated that TGA was adsorbed onto the surface of TiO2 via COOH groups while the -SH group was exposed outside, and replaced DDT at the surface of the CIS QDs, leading to the attachment between TiO2 and CIS. It was revealed that the CIS QDs of similar to 3.6 nm in size exhibited the best light absorption capacity and photovoltaic performance. An over-coating of CdS significantly improved the performance of the QDSSCs owing to decreased electron recombination, and a power conversion efficiency of similar to 2.83% was obtained.
KeywordCuins2 Quantum Dot Sensitized Solar Cell Bifunctional Linker Thioglycolic Acid Assisted Adsorption
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedChemistry
Indexed BySCI
WOS SubjectChemistry, Physical
WOS IDWOS:000358399500013
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Xiamen Univ, Dept Chem & Biochem Engn, Coll Chem & Chem Engn, Xiamen 361005, Fujian Province, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Renewable Energy & Gas Hydrate Key Lab, Guangzhou 510640, Guangdong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang Nan,Liang Zhu-Rong,Wang Xin,et al. CuInS2 Quantum Dot-Sensitized Solar Cells Fabricated via a Linker-Assisted Adsorption Approach[J]. ACTA PHYSICO-CHIMICA SINICA,2015,31(7):1331-1337.
APA Wang Nan.,Liang Zhu-Rong.,Wang Xin.,Xu Xue-Qing.,Fang Jun.,...&Guo Hua-Fang.(2015).CuInS2 Quantum Dot-Sensitized Solar Cells Fabricated via a Linker-Assisted Adsorption Approach.ACTA PHYSICO-CHIMICA SINICA,31(7),1331-1337.
MLA Wang Nan,et al."CuInS2 Quantum Dot-Sensitized Solar Cells Fabricated via a Linker-Assisted Adsorption Approach".ACTA PHYSICO-CHIMICA SINICA 31.7(2015):1331-1337.
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