An Azaacene Derivative as Promising Electron‐Transport Layer for Inverted Perovskite Solar Cells
- 5 July 2016
- journal article
- research article
- Published by Wiley in Chemistry – An Asian Journal
- Vol. 11 (15), 2135-2138
- https://doi.org/10.1002/asia.201600856
Abstract
It is highly desirable to develop novel n‐type organic small molecules as an efficient electron‐transport layer (ETL) for the replacement of PCBM to obtain high‐performance metal‐oxide‐free, solution‐processed inverted perovskite solar cells (PSCs) because this type of solar cells with a low‐temperature and solution‐based process would make their fabrication more feasible and practical. In this research, the new azaacene QCAPZ has been synthesized and employed as non‐fullerene ETL material for inverted PSCs through a solution‐based process without the need for additional dopants or additives. The as‐fabricated inverted PSCs show a power conversion efficiency up to 10.26 %. Our results clearly suggest that larger azaacenes could be promising electron‐transport materials to achieve high‐performance solution‐processed inverted PSCs.Funding Information
- AcRF tier 1 (RG133/14, RG 13/15)
- Tier 2 (ARC 2/13)
- NRF, Singapore
- Open Project of State Key Laboratory of Supramolecular Structure and Materials (sklssm201630)
- National Research Foundation of Singapore (NRF-CRP11-2012-01)
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