Energy-distinguishable bipolar UV photoelectron injection from LiCl-promoted FAPbCl3 perovskite nanorods

Jue Gong; Xun Li; Peijun Guo; Ian Zhang; Wei Huang; Ke Lu; Yingwen Cheng; Richard D. Schaller; Tobin J. Marks; Tao Xu

doi:10.1039/c9ta01160a

Energy-distinguishable bipolar UV photoelectron injection from LiCl-promoted FAPbCl₃ perovskite nanorods

Jue Gong, Xun Li, Peijun Guo, Ian Zhang, Wei Huang, Ke Lu, Yingwen Cheng, Richard D. Schaller, Tobin J. Marks, Tao Xu^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

High-performance optoelectronic devices, such as solar cells and light-emitting diodes, have been fabricated with lead halide perovskites owing to their superior carrier properties. However, charge transport in such optoelectronics is intrinsically directional due to the existence of p-n junctions, which thus lacks the potential to elucidate any perturbations in light or electricity during energy conversion. Here, with the presence of a LiCl additive in a formamidinium chloride (FACl) solution, the as-grown LiCl:FAPbCl₃ nanorods demonstrate greatly enhanced crystallinity and UV photoresponse as compared to pristine FAPbCl₃ nanostructures without the LiCl additive. Most importantly, the LiCl:FAPbCl₃ nanorod film exhibits unprecedented distinguishability to UV photons with different energies and oscillating intensities, in the form of bipolar and periodically oscillatory photocurrents. This work could advance the fundamental understanding of photoinduced carrier processes in halide perovskites and facilitate the development of novel UV-based optical communications.

Original language	English (US)
Pages (from-to)	13043-13049
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	21
DOIs	https://doi.org/10.1039/c9ta01160a
State	Published - 2019

Funding

T. X. acknowledges support from the U.S. National Science Foundation (DMR-1806152). Part of this work was performed at the Center for Nanoscale Materials, a U.S. Department of Energy Office of Science User Facility, and supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357. W. H. and T. J. M. acknowledge support from Northwestern University National Science Foundation MRSEC (DMR-1720139). Ian Zhang is a summer high school student volunteer from Naperville Neuqua Valley High School. J. G. acknowledges the experimental support from Prof. Elizabeth R. Gaillard.

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1039/c9ta01160a

Cite this

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title = "Energy-distinguishable bipolar UV photoelectron injection from LiCl-promoted FAPbCl3 perovskite nanorods",

abstract = "High-performance optoelectronic devices, such as solar cells and light-emitting diodes, have been fabricated with lead halide perovskites owing to their superior carrier properties. However, charge transport in such optoelectronics is intrinsically directional due to the existence of p-n junctions, which thus lacks the potential to elucidate any perturbations in light or electricity during energy conversion. Here, with the presence of a LiCl additive in a formamidinium chloride (FACl) solution, the as-grown LiCl:FAPbCl3 nanorods demonstrate greatly enhanced crystallinity and UV photoresponse as compared to pristine FAPbCl3 nanostructures without the LiCl additive. Most importantly, the LiCl:FAPbCl3 nanorod film exhibits unprecedented distinguishability to UV photons with different energies and oscillating intensities, in the form of bipolar and periodically oscillatory photocurrents. This work could advance the fundamental understanding of photoinduced carrier processes in halide perovskites and facilitate the development of novel UV-based optical communications.",

author = "Jue Gong and Xun Li and Peijun Guo and Ian Zhang and Wei Huang and Ke Lu and Yingwen Cheng and Schaller, {Richard D.} and Marks, {Tobin J.} and Tao Xu",

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year = "2019",

doi = "10.1039/c9ta01160a",

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AU - Gong, Jue

AU - Li, Xun

AU - Guo, Peijun

AU - Zhang, Ian

AU - Huang, Wei

AU - Lu, Ke

AU - Cheng, Yingwen

AU - Schaller, Richard D.

AU - Marks, Tobin J.

AU - Xu, Tao

PY - 2019

Y1 - 2019

N2 - High-performance optoelectronic devices, such as solar cells and light-emitting diodes, have been fabricated with lead halide perovskites owing to their superior carrier properties. However, charge transport in such optoelectronics is intrinsically directional due to the existence of p-n junctions, which thus lacks the potential to elucidate any perturbations in light or electricity during energy conversion. Here, with the presence of a LiCl additive in a formamidinium chloride (FACl) solution, the as-grown LiCl:FAPbCl3 nanorods demonstrate greatly enhanced crystallinity and UV photoresponse as compared to pristine FAPbCl3 nanostructures without the LiCl additive. Most importantly, the LiCl:FAPbCl3 nanorod film exhibits unprecedented distinguishability to UV photons with different energies and oscillating intensities, in the form of bipolar and periodically oscillatory photocurrents. This work could advance the fundamental understanding of photoinduced carrier processes in halide perovskites and facilitate the development of novel UV-based optical communications.

AB - High-performance optoelectronic devices, such as solar cells and light-emitting diodes, have been fabricated with lead halide perovskites owing to their superior carrier properties. However, charge transport in such optoelectronics is intrinsically directional due to the existence of p-n junctions, which thus lacks the potential to elucidate any perturbations in light or electricity during energy conversion. Here, with the presence of a LiCl additive in a formamidinium chloride (FACl) solution, the as-grown LiCl:FAPbCl3 nanorods demonstrate greatly enhanced crystallinity and UV photoresponse as compared to pristine FAPbCl3 nanostructures without the LiCl additive. Most importantly, the LiCl:FAPbCl3 nanorod film exhibits unprecedented distinguishability to UV photons with different energies and oscillating intensities, in the form of bipolar and periodically oscillatory photocurrents. This work could advance the fundamental understanding of photoinduced carrier processes in halide perovskites and facilitate the development of novel UV-based optical communications.

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