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• 作者：Robert B. BalowCaleb K. Miskin ; Mahdi M. Abu-Omar ; Rakesh Agrawal
• 刊名：Chemistry of Materials
• 出版年：2017
• 出版时间：January 24, 2017
• 年：2017
• 卷：29
• 期：2
• 页码：573-578
• 全文大小：488K
• ISSN：1520-5002

文摘

A synthetic method for producing monodisperse Cu₃(Sb_1–xAs_x)S₄ nanocrystals (NCs) with highly tunable semiconducting properties is discussed. Additionally, significant improvement in collectible photocurrent is observed for arsenic-rich compositions, with a 10-fold improvement in photocurrent density from Cu₃AsS₄ NC thin films compared to the more well-studied Cu₃SbS₄ composition. Interestingly, this improvement in photocurrent is observed despite the increased optical band gap of the arsenic-rich compositions. These results suggest Cu₃AsS₄ and arsenic-rich compositions of Cu₃(Sb_1–xAs_x)S₄ may yield higher photocurrent densities for solar conversion devices. Furthermore, the simple and robust synthesis, scalable spray coating strategy, and highly tunable nature of the NCs provides a foundation encompassing numerous fields requiring inexpensive and earth-abundant semiconducting materials.