Efficient Flexible Solar Cell based on Composition‐Tailored Hybrid Perovskite
Abstract
Organic–inorganic hybrid perovskites (OIHPs) are new photoactive layer candidates for lightweight and flexible solar cells due to their low‐temperature process capability; however, the reported efficiency of flexible OIHP devices is far behind those achieved on rigid glass substrates. Here, it is revealed that the limiting factor is the different perovskite film deposition conditions required to form the same film morphology on flexible substrates. An optimized perovskite film composition needs a different precursor ratio, which is found to be essential for the formation of high‐quality perovskite films with longer radiative carrier recombination lifetime, smaller density of trap states, reduced precursor residue, and uniform and pin‐hole free films. A record efficiency of 18.1% is achieved for the flexible perovskite solar‐cell devices made on an indium tin oxide/poly(ethylene terephthalate) substrate via a low temperature (≤100 °C) solution process.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 09, 2017
- Source ID
- 10.1002/adma.201605900
Entities
People
- Bo Chen
- Cheng Bi
- Haotong Wei
- Jinsong Huang
- Stephan Deluca
Organizations
- Air Force Office of Scientific Research
- University of Nebraska–Lincoln