Thin Insulating Tunneling Contacts for Efficient and Water-Resistant Perovskite Solar Cells

Qi Wang; Qingfeng Dong; Tao Li; Alexei Gruverman; Jinsong Huang

doi:10.1002/adma.201600969

Thin Insulating Tunneling Contacts for Efficient and Water-Resistant Perovskite Solar Cells

Adv Mater. 2016 Aug;28(31):6734-9. doi: 10.1002/adma.201600969. Epub 2016 May 17.

Authors

Qi Wang¹, Qingfeng Dong¹, Tao Li², Alexei Gruverman², Jinsong Huang¹

Affiliations

¹ Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.
² Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.

PMID: 27184864
DOI: 10.1002/adma.201600969

Abstract

Tunneling contacts made of any insulating polymers, a champion technology in silicon solar cells, are shown to increase the stabilized efficiency of perovskite solar cells (PSCs) to 20.3%. The tunneling layers spatially separate photo-generated electrons and holes at the perovskite-cathode interface and reduce charge recombination. The tunneling layers made of hydrophobic polymers also significantly enhance the resistance of PSCs to water-caused damage.