Mg Doped CuCrO2 as Efficient Hole Transport Layers for Organic and Perovskite Solar Cells

Boya Zhang; Sampreetha Thampy; Wiley A Dunlap-Shohl; Weijie Xu; Yangzi Zheng; Fong-Yi Cao; Yen-Ju Cheng; Anton V Malko; David B Mitzi; Julia W P Hsu

doi:10.3390/nano9091311

Mg Doped CuCrO₂ as Efficient Hole Transport Layers for Organic and Perovskite Solar Cells

Nanomaterials (Basel). 2019 Sep 13;9(9):1311. doi: 10.3390/nano9091311.

Authors

Affiliations

¹ Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA.
² Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA.
³ Department of Physics, The University of Texas at Dallas, Richardson, TX 75080, USA.
⁴ Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
⁵ Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA. jwhsu@utdallas.edu.

Abstract

The electrical and optical properties of the hole transport layer (HTL) are critical for organic and halide perovskite solar cell (OSC and PSC, respectively) performance. In this work, we studied the effect of Mg doping on CuCrO₂ (CCO) nanoparticles and their performance as HTLs in OSCs and PSCs. CCO and Mg doped CCO (Mg:CCO) nanoparticles were hydrothermally synthesized. The nanoparticles were characterized by various experimental techniques to study the effect of Mg doping on structural, chemical, morphological, optical, and electronic properties of CCO. We found that Mg doping increases work function and decreases particle size. We demonstrate CCO and Mg:CCO as efficient HTLs in a variety of OSCs, including the first demonstration of a non-fullerene acceptor bulk heterojunction, and CH₃NH₃PbI₃ PSCs. A small improvement of average short-circuit current density with Mg doping was found in all systems.

Keywords: Mg doped CuCrO2; hole transport layer; organic solar cells; perovskite solar cells.

Abstract

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