Synthesis of CuInS2, CuInSe2, and Cu(InxGa1-x)Se2 (CIGS) Nanocrystal “Inks” for Printable Photovoltaics

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• 作者：Matthew G. Panthani ; Vahid Akhavan ; Brian Goodfellow ; Johanna P. Schmidtke ; Lawrence Dunn ; Ananth Dodabalapur ; Paul F. Barbara ; Brian A. Korgel
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：December 10, 2008
• 年：2008
• 卷：130
• 期：49
• 页码：16770-16777
• 全文大小：566K
• 年卷期：v.130,no.49(December 10, 2008)
• ISSN：1520-5126

文摘

Chalcopyrite copper indium sulfide (CuInS₂) and copper indium gallium selenide (Cu(In_xGa_1-x)Se₂; CIGS) nanocrystals ranging from 5 to 25 nm in diameter were synthesized by arrested precipitation in solution. The In/Ga ratio in the CIGS nanocrystals could be controlled by varying the In/Ga reactant ratio in the reaction, and the optical properties of the CuInS₂ and CIGS nanocrystals correspond to those of the respective bulk materials. Using methods developed to produce uniform, crack-free micrometer-thick films, CuInSe₂ nanocrystals were tested in prototype photovoltaic devices. As a proof-of-concept, the nanocrystal-based devices exhibited a reproducible photovoltaic response.