High-performance flexible perovskite solar cells exploiting Zn2SnO4 prepared in solution below 100 °C

Seong Sik Shin; Woon Seok Yang; Jun Hong Noh; Jae Ho Suk; Nam Joong Jeon; Jong Hoon Park; Ju Seong Kim; Won Mo Seong; Sang Il Seok

doi:10.1038/ncomms8410

High-performance flexible perovskite solar cells exploiting Zn2SnO4 prepared in solution below 100 °C

Nat Commun. 2015 Jun 22:6:7410. doi: 10.1038/ncomms8410.

Authors

Seong Sik Shin¹, Woon Seok Yang², Jun Hong Noh², Jae Ho Suk³, Nam Joong Jeon², Jong Hoon Park⁴, Ju Seong Kim³, Won Mo Seong³, Sang Il Seok⁵

Affiliations

¹ 1] Division of Advanced Materials, Korea Research Institute of Chemical Technology, 141 Gajeong-Ro, Daejeon 305-600, Korea [2] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [3] WCU Hybrid Materials Program, Seoul National University, Seoul 151-744, Korea.
² Division of Advanced Materials, Korea Research Institute of Chemical Technology, 141 Gajeong-Ro, Daejeon 305-600, Korea.
³ 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] WCU Hybrid Materials Program, Seoul National University, Seoul 151-744, Korea.
⁴ 1] Division of Advanced Materials, Korea Research Institute of Chemical Technology, 141 Gajeong-Ro, Daejeon 305-600, Korea [2] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea.
⁵ 1] Division of Advanced Materials, Korea Research Institute of Chemical Technology, 141 Gajeong-Ro, Daejeon 305-600, Korea [2] Department of Energy Science, 2066 Seoburo, Jangan-gu, Sungkyunkwan University, Suwon 440-746, Republic of Korea.

Abstract

Fabricating inorganic-organic hybrid perovskite solar cells (PSCs) on plastic substrates broadens their scope for implementation in real systems by imparting portability, conformability and allowing high-throughput production, which is necessary for lowering costs. Here we report a new route to prepare highly dispersed Zn2SnO4 (ZSO) nanoparticles at low-temperature (<100 °C) for the development of high-performance flexible PSCs. The introduction of the ZSO film significantly improves transmittance of flexible polyethylene naphthalate/indium-doped tin oxide (PEN/ITO)-coated substrate from ∼75 to ∼90% over the entire range of wavelengths. The best performing flexible PSC, based on the ZSO and CH3NH3PbI3 layer, exhibits steady-state power conversion efficiency (PCE) of 14.85% under AM 1.5G 100 mW·cm(-2) illumination. This renders ZSO a promising candidate as electron-conducting electrode for the highly efficient flexible PSC applications.