High-performance perovskite/Cu(In,Ga)Se 2 monolithic tandem solar cells
Abstract
Tandem solar cells can boost efficiency by using more of the available solar spectrum. Han et al. fabricated a two-terminal tandem cell with an inorganicorganic hybrid perovskite top layer and a Cu(In,Ga)Se 2 (CIGS) bottom layer. Control of the roughness of the CIGS surface and the use of a heavily doped organic hole transport layer were crucial to achieve a 22.4% power conversion efficiency. The unencapsulated tandem cells maintained almost 90% of their efficiency after 500 hours of operation under ambient conditions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 31, 2018
- Source ID
- 10.1126/science.aat5055
Entities
People
- En-ping Yao
- Jyh-Lih Wu
- Lei Meng
- Pengyu Sun
- Qifeng Han
- Sang-Hoon Bae
- Sheng-Yung Chang
- Takuya Kato
- Veronica Bermudez
- Yang Yang
- Yao-Tsung Hsieh
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- University of California, Los Angeles