Diethylenetriamine assisted synthesis and characterization of stannite quaternary semiconductor Cu₂ZnSnSe₄ nanorods by self-assembly

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• 作者：Lin-Jer Chen^a ; ^{linjerchen@hotmail.com} ; Yu-Ju Chuang^b
• 关键词：A1. Crystal structure ; A2. Hydrothermal crystal growth ; B1. Nanomaterials ; B2. Semiconducting quaternary alloys ; B3. Solar cells
• 刊名：Journal of Crystal Growth
• 出版年：2013
• 出版时间：1 August, 2013
• 年：2013
• 卷：376
• 期：Complete
• 页码：11-16
• 全文大小：1269 K

文摘

Stannites are important contenders among thin-film solar cells due to their direct band gap and higher absorption coefficient. I₂-II-IV-VI₄ nanocrystals of Cu₂ZnSnSe₄ are stannite material with a near-optimum band gap of ¡«1.5 eV. Semiconductor Cu₂ZnSnSe₄ nanorods were successfully prepared via a relatively simple and convenient solvothermal route. The device parameters for a single junction Cu₂ZnSnSe₄ solar cell under AM1.5G are as follows: open circuit voltage of 308 mV, short-circuit current of 29.9 mA/cm², fill factor of 27 % , and a power conversion efficiency of 2.48 % . Based on a series of comparative experiments under various reaction conditions, the probable formation mechanism of crystals Cu₂ZnSnSe₄ nanorods is proposed.