Self-powered photodetectors based on Ruddlesden–Popper 2D hybrid perovskites with carbazole derivatives

Author:

Alphenaar Anna Niamh1ORCID,Zhang Xiaoyu2ORCID,Xu Yuanze2ORCID,Ramakrishnan Shripathi2ORCID,Zhang Yugang3ORCID,Yu Qiuming2ORCID

Affiliation:

1. Department of Chemistry and Chemical Biology, Cornell University 1 , Ithaca, New York 14850, USA

2. Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University 2 , Ithaca, New York 14850, USA

3. Centre for Functional Nanomaterials, Brookhaven National Laboratory 3 , Upton, New York 11973-5000, USA

Abstract

Recently, carbazole-based organic cations have garnered interest for their potential application in two-dimensional (2D) layered hybrid perovskite solar cells because of their strong hole extraction and transport as well as humidity resistance. However, the potential incorporation of carbazole-based Ruddlesden–Popper 2D hybrid perovskites in photodetectors has been largely unexplored. In this study, we synthesized ammonium 1-(9H-carbazol-9-yl) ethanaminium iodide (CzEAI) and fabricated (CzEA)2PbI4 2D perovskite thin films via varying solvent conditions to control film morphology. We constructed photodiode-type photodetectors with the active layer of (CzEA)2PbI4 2D perovskites and demonstrated a specific detectivity of 6.95 × 1010 Jones at 485 nm illumination without external bias. These results demonstrate the potential of carbazole-based 2D perovskites in a wide range of optoelectronic applications.

Funder

National Science Foundation

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

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