Scalable Fabrication of Efficient Perovskite Solar Modules on Flexible Glass Substrates
Abstract
Perovskite materials are good candidates for flexible photovoltaic applications due to their strong absorption and low‐temperature processing, but efficient flexible perovskite modules have not yet been realized. Here, a record efficiency flexible perovskite solar module is demonstrated by blade coating high‐quality perovskite films on flexible Corning Willow Glass using additive engineering. Ammonium chloride (NH4Cl) is added into the perovskite precursor solution to retard the nucleation which prevents voids formation at the interface of perovskite and glass. The addition of NH4Cl also suppresses the formation of PbI2 and reduces the trap density in the perovskite films. The implementation of NH4Cl enables the fabrication of single junction flexible perovskite solar devices with an efficiency of 19.72% on small‐area cells and a record aperture efficiency of 15.86% on modules with an area of 42.9 cm2. This work provides a simple way to scale up high‐efficiency flexible perovskite modules for various applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 21, 2019
- Source ID
- 10.1002/aenm.201903108
Entities
People
- Bo Chen
- Charles H. Van Brackle
- Jinsong Huang
- Peter N Rudd
- Shangshang Chen
- Xuezeng Dai
- Xun Xiao
- Yehao Deng
- Yun Lin
Organizations
- National Science Foundation
- Office of Naval Research
- University of North Carolina at Chapel Hill