Well-Dispersed Cu2ZnSnS4 Nanocrystals Synthesized from Alcohols and Their Applications for Polymer Photovoltaics

作者：Cheng, Jiang; Dai, Zhongjun; Chen, Bing; Ji, Ran; Yang, Xin; Hu, Rong; Zhu, Jiang^*; Li, Lu^*

来源：Nanoscale Research Letters, 2016, 11(1): 550.

DOI：10.1186/s11671-016-1761-6

• Nanocrystalline material
• Cu2ZnSnS4
• Solvothermal method
• Photoelectrochemical property

In this work, we report on a simple non-injection synthesis routine for the preparation of well-dispersed monocrystalline Cu2ZnSnS4 (CZTS) nanoparticles (NPs). The nanocrystal morphology was investigated by scanning and transmission electron microscopy, and its phase composition was studied by X-ray diffraction and Raman analyses. Cu2ZnSnS4 nanoparticles prepared using ethanolamine and diethanolamine as chemical stabilizers showed a high purity and a suitable size for polymer solar cell applications. The fabricated CZTS NPs are shown to be easily dispersed in a polymer/fullerene aromatic solution as well as the hybrid photovoltaic active layer. Thanks to the increment in the light absorption and electrical conductivity of the active layer, solar cells with a small amount of CZTS nanoparticles resulted in a clear enhancement of the photovoltaic performance. The short-circuit current density is increased from 9.90 up to 10.67 mA/cm(2), corresponding to an improvement in the power conversion efficiency (PCE) from 3.30 to 3.65%.

• 出版日期2016-12-13
• 单位重庆文理学院