Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 13, Pages 15456-15463Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b22891
Keywords
polymeric thin-film; transparent electrode; flexible perovskite solar cells; high electrical conductivity; device performance
Funding
- National Science Foundation [EECs 1351785, EECs 1903303]
- Air Force Office of Scientific Research (AFOSR) (Organic Materials Chemistry Program) [FA955015-1-0292]
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In the past decade, perovskite solar cells (PSCs) were arising as a new generation of low-cost solar technology for renewable energy generation. More than 25% of power conversion efficiency (PCE) was reported from PSCs on the rigid indium tin oxide (ITO)/glass electrode. However, PSCs fabricated on flexible solution-processed transparent electrodes have still been a challenge to date. In this work, we report a solution-processed transparent polymeric thin film as the electrode for flexible solution-processed PSCs. The solution-processed polymeric thin film exhibits superior optical transparency and decent electrical conductivity. As compared with a PCE of 16.60% from PSCs on the ITO/glass substrate, PSCs on the solution-processed transparent polymeric electrode/glass substrate exhibit a PCE of 13.36% and PSCs on the solution-processed transparent polymeric thin-film/polyethylene terephthalate flexible substrate possess a PCE of 10.16%. Systematic studies demonstrate that poor electrical conductivity of the solution-processed transparent polymeric electrode and serious interfacial charge carrier recombination are responsible for low PCEs. Nevertheless, our results demonstrate that we provide a facile route to develop flexible PSCs by utilization of solution-processed polymeric thin films as the transparent electrodes.
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