AI Article Synopsis
- * A new dopant-free HTM called CI-TTIN-2F was developed, which enhances charge collection and helps heal defects on the surface of CsPbI, improving the stability and performance of solar cells.
- * Solar cells using CI-TTIN-2F HTM achieved efficiencies up to 15.9% and maintained 86% efficiency after 1000 hours, demonstrating the potential of dopant-free HTMs for scaling up inorganic perovskite solar cells.
Article Abstract
The emerging CsPbI perovskites are highly efficient and thermally stable materials for wide-band gap perovskite solar cells (PSCs), but the doped hole transport materials (HTMs) accelerate the undesirable phase transition of CsPbI in ambient. Herein, a dopant-free D-π-A type HTM named CI-TTIN-2F has been developed which overcomes this problem. The suitable optoelectronic properties and energy-level alignment endow CI-TTIN-2F with excellent charge collection properties. Moreover, CI-TTIN-2F provides multisite defect-healing effects on the defective sites of CsPbI surface. Inorganic CsPbI PSCs with CI-TTIN-2F HTM feature high efficiencies up to 15.9 %, along with 86 % efficiency retention after 1000 h under ambient conditions. Inorganic perovskite solar modules were also fabricated that exhibiting an efficiency of 11.0 % with a record area of 27 cm . This work confirms that using efficient dopant-free HTMs is an attractive strategy to stabilize inorganic PSCs for their future scale-up.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8456866 | PMC |
| http://dx.doi.org/10.1002/anie.202107774 | DOI Listing |
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