Enabling AC electroluminescence in quasi-2D perovskites by uniformly arranging different-n-value nanoplates to allow bidirectional charge transport
Abstract
Perovskite light-emitting diodes (LEDs) are normally operated under forward direct current (DC) to realize electron/hole injection at cathode/anode surfaces. In this work, we demonstrate an alternating current (AC) driven LED enabled by bi-directionally allowed charge transport in quasi-2D perovskite (PEA2MAn-1PbnI3n+1) film. Essentially, the bi-directional charge transport is realized by uniformly arranging different-n-value 2D nanoplates together with symmetrically designed anode/cathode interfaces, which can allow injected electrons and holes to form light-emitting states under both forward and reverse biases, leading to an AC electroluminescence (EL) with the device architecture of ITO/PEI/PEDOT:PSS/PEA2MAn-1PbnI3n+1/P3HT/PEI/Ag. The high AC EL performance was achieved with the radiance = 24 W Sr-1 m-2 and 18.3 W Sr-1 m-2 and EQE = 12.5% and 3.7% under forward and reverse biases. Furthermore, the device-operational stability was largely improved with the half-intensity time of T50 = 11.0 h under AC bias (+2 V/-2 V, 50 Hz) as compared to T50 = 3.9 h under forward bias (+2 V/0 V, 50 Hz).
- Authors:
-
[2];
[2];
- Univ. of Tennessee, Knoxville, TN (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF)
- OSTI Identifier:
- 1671107
- Report Number(s):
- LA-UR-20-25291
Journal ID: ISSN 2211-2855
- Grant/Contract Number:
- 89233218CNA000001; FA 9550-15-1-0064; FA2386-15-1-4104; NSF-1911659; CNMS2016-279; CNMS2016-R45; AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nano Energy
- Additional Journal Information:
- Journal Volume: 79; Journal ID: ISSN 2211-2855
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Quasi-2D perovskites; symmetrical device design; bidirectional transport; AC LEDs; perovskite LEDs
Citation Formats
Zhang, Jia, Tsai, Hsinhan, Nie, Wanyi, and Hu, Bin. Enabling AC electroluminescence in quasi-2D perovskites by uniformly arranging different-n-value nanoplates to allow bidirectional charge transport. United States: N. p., 2021.
Web. doi:10.1016/j.nanoen.2020.105413.
Zhang, Jia, Tsai, Hsinhan, Nie, Wanyi, & Hu, Bin. Enabling AC electroluminescence in quasi-2D perovskites by uniformly arranging different-n-value nanoplates to allow bidirectional charge transport. United States. https://doi.org/10.1016/j.nanoen.2020.105413
Zhang, Jia, Tsai, Hsinhan, Nie, Wanyi, and Hu, Bin. Sat .
"Enabling AC electroluminescence in quasi-2D perovskites by uniformly arranging different-n-value nanoplates to allow bidirectional charge transport". United States. https://doi.org/10.1016/j.nanoen.2020.105413. https://www.osti.gov/servlets/purl/1671107.
@article{osti_1671107,
title = {Enabling AC electroluminescence in quasi-2D perovskites by uniformly arranging different-n-value nanoplates to allow bidirectional charge transport},
author = {Zhang, Jia and Tsai, Hsinhan and Nie, Wanyi and Hu, Bin},
abstractNote = {Perovskite light-emitting diodes (LEDs) are normally operated under forward direct current (DC) to realize electron/hole injection at cathode/anode surfaces. In this work, we demonstrate an alternating current (AC) driven LED enabled by bi-directionally allowed charge transport in quasi-2D perovskite (PEA2MAn-1PbnI3n+1) film. Essentially, the bi-directional charge transport is realized by uniformly arranging different-n-value 2D nanoplates together with symmetrically designed anode/cathode interfaces, which can allow injected electrons and holes to form light-emitting states under both forward and reverse biases, leading to an AC electroluminescence (EL) with the device architecture of ITO/PEI/PEDOT:PSS/PEA2MAn-1PbnI3n+1/P3HT/PEI/Ag. The high AC EL performance was achieved with the radiance = 24 W Sr-1 m-2 and 18.3 W Sr-1 m-2 and EQE = 12.5% and 3.7% under forward and reverse biases. Furthermore, the device-operational stability was largely improved with the half-intensity time of T50 = 11.0 h under AC bias (+2 V/-2 V, 50 Hz) as compared to T50 = 3.9 h under forward bias (+2 V/0 V, 50 Hz).},
doi = {10.1016/j.nanoen.2020.105413},
journal = {Nano Energy},
number = ,
volume = 79,
place = {United States},
year = {Sat Sep 25 00:00:00 EDT 2021},
month = {Sat Sep 25 00:00:00 EDT 2021}
}
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