Donor/Acceptor Charge-Transfer States at Two-Dimensional Metal Halide Perovskite and Organic Semiconductor Interfaces
Abstract
Metal halide perovskite semiconductors with small exciton binding energy have been widely used in perovskite solar cells and achieved rapid progress in terms of device performance. However, the strong excitonic nature of two-dimensional (2D) perovskites with small n values remains underexploited (n represents the number of inorganic monolayer sheets sandwiched between bulky organic cation layers). In this work, we report experimental evidence of donor/acceptor charge-transfer (CT) states formed at 2D metal halide perovskite/organic semiconductor heterojunctions, with a corresponding increase in photocurrent production for these excitonic materials. Furthermore, it is found that the size of the organic cation in the 2D perovskite layer plays a critical role in the CT process. Here, the ability to dissociate excitons in 2D perovskites by interfacing with an organic semiconductor in a donor/acceptor configuration opens up new opportunities for exploiting the excitonic nature of low-dimensional perovskites in applications such as solar cells, photodetectors, light-emitting devices, and light–matter interactions.
- Authors:
-
[1];
[1];
[2];
[1]
- Princeton Univ., NJ (United States)
- Pennsylvania State Univ., University Park, PA (United States)
- Publication Date:
- Research Org.:
- Princeton Univ., NJ (United States); Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1595404
- Grant/Contract Number:
- SC0012458; SC0012365; N00014-17-1-2005
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Energy Letters
- Additional Journal Information:
- Journal Volume: 3; Journal Issue: 11; Journal ID: ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; Heterojunctions; External quantum efficiency; Solar cells; Cations; Perovskites
Citation Formats
Zhao, Lianfeng, Lin, YunHui L., Kim, Hoyeon, Giebink, Noel C., and Rand, Barry P. Donor/Acceptor Charge-Transfer States at Two-Dimensional Metal Halide Perovskite and Organic Semiconductor Interfaces. United States: N. p., 2018.
Web. doi:10.1021/acsenergylett.8b01722.
Zhao, Lianfeng, Lin, YunHui L., Kim, Hoyeon, Giebink, Noel C., & Rand, Barry P. Donor/Acceptor Charge-Transfer States at Two-Dimensional Metal Halide Perovskite and Organic Semiconductor Interfaces. United States. https://doi.org/10.1021/acsenergylett.8b01722
Zhao, Lianfeng, Lin, YunHui L., Kim, Hoyeon, Giebink, Noel C., and Rand, Barry P. Thu .
"Donor/Acceptor Charge-Transfer States at Two-Dimensional Metal Halide Perovskite and Organic Semiconductor Interfaces". United States. https://doi.org/10.1021/acsenergylett.8b01722. https://www.osti.gov/servlets/purl/1595404.
@article{osti_1595404,
title = {Donor/Acceptor Charge-Transfer States at Two-Dimensional Metal Halide Perovskite and Organic Semiconductor Interfaces},
author = {Zhao, Lianfeng and Lin, YunHui L. and Kim, Hoyeon and Giebink, Noel C. and Rand, Barry P.},
abstractNote = {Metal halide perovskite semiconductors with small exciton binding energy have been widely used in perovskite solar cells and achieved rapid progress in terms of device performance. However, the strong excitonic nature of two-dimensional (2D) perovskites with small n values remains underexploited (n represents the number of inorganic monolayer sheets sandwiched between bulky organic cation layers). In this work, we report experimental evidence of donor/acceptor charge-transfer (CT) states formed at 2D metal halide perovskite/organic semiconductor heterojunctions, with a corresponding increase in photocurrent production for these excitonic materials. Furthermore, it is found that the size of the organic cation in the 2D perovskite layer plays a critical role in the CT process. Here, the ability to dissociate excitons in 2D perovskites by interfacing with an organic semiconductor in a donor/acceptor configuration opens up new opportunities for exploiting the excitonic nature of low-dimensional perovskites in applications such as solar cells, photodetectors, light-emitting devices, and light–matter interactions.},
doi = {10.1021/acsenergylett.8b01722},
journal = {ACS Energy Letters},
number = 11,
volume = 3,
place = {United States},
year = {Thu Oct 11 00:00:00 EDT 2018},
month = {Thu Oct 11 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Long-lived charge separation in two-dimensional ligand-perovskite heterostructures
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