Projects per year
Abstract
Inverted perovskite solar cells (PSCs) prepared by the antisolvent method have achieved power conversion efficiencies (PCEs) of over 23%, but they are not ideal for device upscaling. In contrast, gas-quenched PSCs offer great potential for upscaling, but their performance still lags behind. Herein, the gas-quenched films through both surface and bulk modifications are upgraded. First, a novel surface modifier, benzylammonium thiocyanate, is found to allow remarkably improved surface properties, but the PCE gain is limited by the existence of longitudinally multiple grains. Thus, methylammonium chloride additive as a second modifier to realize monolithic grains is further utilized. Such an integrated strategy enables the average open-circuit voltage of the gas-quenched PSCs to increase from 1.08 to 1.15 V, leading to a champion PCE of 22.3%. Moreover, the unencapsulated device shows negligible degradation after 150 h of maximum power point operation under simulated 1 sun illumination in N2.
Original language | English |
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Article number | 2200053 |
Journal | Solar RRL |
Volume | 6 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2022 |
Keywords
- additive engineering
- benzylammonium thiocyanate
- gas quenching
- inverted p–i–n perovskite solar cells
- stabilities
- surface treatments
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Fields of Expertise
- Advanced Materials Science
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