Efficient hybrid solar cell with P3HT:PCBM and Cu2ZnSnS4 nanocrystals

33rd International Conference on the Physics of Semiconductors

Jang, Se-Jung^1 ; Ho, Nhu Thuy^1 ; Lee, Min Hyung^2 ; Kim, Yong Soo^1

Department of Physics, Energy Harvest-Storage Research Center, University of Ulsan, Ulsan

44610, Korea, Republic of^1

Department of Chemistry, Harvest-Storage Research Center, University of Ulsan, Ulsan

44610, Korea, Republic of^2

关键词: Absorption material;    Bulk heterojunction;    Component elements;    Double heterojunctions;    Higher efficiency;    Hybrid solar cells;    Power conversion efficiencies;    Solution-processed;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/864/1/012065/pdf
DOI  :  10.1088/1742-6596/864/1/012065

来源: IOP

【 摘 要 】

Recently, Cu2ZnSnS4(CZTS) with band gap about 1.50 eV is predicted to become an ideal light absorption material due to the abundant component elements in the crust being nontoxic and environmentally friendly. However, CZTS solar cells made by high temperature and vacuum-processed are at a perceived cost disadvantage in compared with solution-processed systems such as organic and hybrid solar cells. In this study, we propose a hybrid solar configurations with solution-processed CZTS nanocrystals and P3HT:PCBM bulk heterojunction. The forming double heterojunction, as charge can be separated at both the P3HT:PCBM and CZTS:PCBM interface is attributed to enhance the light harvesting efficiency. As a result, organic solar cells with CZTS nanocrystals show the higher efficiency 3.32 % compare to 2.65 % of reference organic solar cells. A 25 % improvement of power conversion efficiency is obtained by the increasing in short-circuit current and fill factor.