Achieving High Current Density of Perovskite Solar Cells by Modulating the Dominated Facets of Room-Temperature DC Magnetron Sputtered TiO2 Electron Extraction Layer

Aibin Huang; Lei Lei; Jingting Zhu; Yu Yu; Yan Liu; Songwang Yang; Shanhu Bao; Xun Cao; Ping Jin

doi:10.1021/acsami.6b14040

Achieving High Current Density of Perovskite Solar Cells by Modulating the Dominated Facets of Room-Temperature DC Magnetron Sputtered TiO₂ Electron Extraction Layer

ACS Appl Mater Interfaces. 2017 Jan 25;9(3):2016-2022. doi: 10.1021/acsami.6b14040. Epub 2017 Jan 12.

Authors

Aibin Huang^{1

2}, Lei Lei¹, Jingting Zhu^{1

2}, Yu Yu^{1

2}, Yan Liu¹, Songwang Yang³, Shanhu Bao¹, Xun Cao¹, Ping Jin^{1

4}

Affiliations

¹ State Key Laboratory of High Performance Ceramics and superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Dingxi, 1295, Changning, Shanghai 200050, China.
² University of Chinese Academy of Sciences , Yuquan 19, Shijingshan, Beijing 100049, China.
³ CAS Key Laboratory of Materials for Energy Conversion, Shanghai Instute of Ceramics, Chinese Academy of Sciences , Heshuo 588, Jiading, Shanghai 201899, China.
⁴ National Institute of Advanced Industrial Science and Technology (AIST) , Moriyama, Nagoya 463-8560, Japan.

PMID: 28072509
DOI: 10.1021/acsami.6b14040

Abstract

The short circuit current density of perovskite solar cell (PSC) was boosted by modulating the dominated plane facets of TiO₂ electron transport layer (ETL). Under optimized condition, TiO₂ with dominant {001} facets showed (i) low incident light loss, (ii) highly smooth surface and excellent wettability for precursor solution, (iii) efficient electron extraction, and (iv) high conductivity in perovskite photovoltaic application. A current density of 24.19 mA cm^-2 was achieved as a value near the maximum limit. The power conversion efficiency was improved to 17.25%, which was the record value of PSCs with DC magnetron sputtered carrier transport layer. What is more, the room-temperature process had a great significance for the cost reduction and flexible application of PSCs.

Keywords: DC magnetron sputtering; TiO2 electron transport layer; excellent performance; perovskite solar cells; {001} facet.