Determining in-plane carrier diffusion in two-dimensional perovskite using local time-resolved photoluminescence

Chunhua Zhou; Weijian Chen; Shuang Yang; Qingdong Ou; Zhixing Gan; Qiaoliang Bao; Baohua Jia; Xiaoming Wen

doi:10.1021/acsami.0c05539

Determining in-plane carrier diffusion in two-dimensional perovskite using local time-resolved photoluminescence

Chunhua Zhou, Weijian Chen, Shuang Yang, Qingdong Ou, Zhixing Gan, Qiaoliang Bao, Baohua Jia, Xiaoming Wen

Materials Science & Engineering

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

24 Citations (Scopus)

Abstract

The diffusion length of photogenerated carriers is a crucial parameter in semiconductors for optoelectronic applications. However, it is a challenging task to determine the diffusion length in layered nanoplatelets due to their anisotropic diffusion of photogenerated carriers and nanometer-thin thickness. Here, we demonstrate a novel method to determine the in-plane diffusion length of photogenerated carriers in layered nanoplatelets using local time-resolved photoluminescence. Also, the in-plane carrier diffusion length of 1.82 μm is obtained for an exfoliated (BA)2PbI4 (BA = CH3(CH2)3NH3) perovskite nanoplatelet. This method is particularly useful for weak luminescent materials and the materials that are easily damaged by long-term laser beam because of the high detection sensitivity. This technique is extendable to other layered materials and therefore plays a valuable role in the development and optimization of two-dimensional (2D) and three-dimensional (3D) semiconductor materials and devices for photovoltaic and photonic applications.

Original language	English
Pages (from-to)	26384-26390
Number of pages	7
Journal	ACS Applied Materials & Interfaces
Volume	12
Issue number	23
DOIs	https://doi.org/10.1021/acsami.0c05539
Publication status	Published - 10 Jun 2020

Keywords

diffusion length
edge-trapping state
surface recombination velocity
time-resolved photoluminescence
two-dimensional (2D) Ruddlesden−Popper perovskites (RPPs) nanoplatelet

UN SDGs

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title = "Determining in-plane carrier diffusion in two-dimensional perovskite using local time-resolved photoluminescence",

abstract = "The diffusion length of photogenerated carriers is a crucial parameter in semiconductors for optoelectronic applications. However, it is a challenging task to determine the diffusion length in layered nanoplatelets due to their anisotropic diffusion of photogenerated carriers and nanometer-thin thickness. Here, we demonstrate a novel method to determine the in-plane diffusion length of photogenerated carriers in layered nanoplatelets using local time-resolved photoluminescence. Also, the in-plane carrier diffusion length of 1.82 μm is obtained for an exfoliated (BA)2PbI4 (BA = CH3(CH2)3NH3) perovskite nanoplatelet. This method is particularly useful for weak luminescent materials and the materials that are easily damaged by long-term laser beam because of the high detection sensitivity. This technique is extendable to other layered materials and therefore plays a valuable role in the development and optimization of two-dimensional (2D) and three-dimensional (3D) semiconductor materials and devices for photovoltaic and photonic applications.",

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author = "Chunhua Zhou and Weijian Chen and Shuang Yang and Qingdong Ou and Zhixing Gan and Qiaoliang Bao and Baohua Jia and Xiaoming Wen",

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T1 - Determining in-plane carrier diffusion in two-dimensional perovskite using local time-resolved photoluminescence

AU - Zhou, Chunhua

AU - Chen, Weijian

AU - Yang, Shuang

AU - Ou, Qingdong

AU - Gan, Zhixing

AU - Bao, Qiaoliang

AU - Jia, Baohua

AU - Wen, Xiaoming

PY - 2020/6/10

Y1 - 2020/6/10

N2 - The diffusion length of photogenerated carriers is a crucial parameter in semiconductors for optoelectronic applications. However, it is a challenging task to determine the diffusion length in layered nanoplatelets due to their anisotropic diffusion of photogenerated carriers and nanometer-thin thickness. Here, we demonstrate a novel method to determine the in-plane diffusion length of photogenerated carriers in layered nanoplatelets using local time-resolved photoluminescence. Also, the in-plane carrier diffusion length of 1.82 μm is obtained for an exfoliated (BA)2PbI4 (BA = CH3(CH2)3NH3) perovskite nanoplatelet. This method is particularly useful for weak luminescent materials and the materials that are easily damaged by long-term laser beam because of the high detection sensitivity. This technique is extendable to other layered materials and therefore plays a valuable role in the development and optimization of two-dimensional (2D) and three-dimensional (3D) semiconductor materials and devices for photovoltaic and photonic applications.

AB - The diffusion length of photogenerated carriers is a crucial parameter in semiconductors for optoelectronic applications. However, it is a challenging task to determine the diffusion length in layered nanoplatelets due to their anisotropic diffusion of photogenerated carriers and nanometer-thin thickness. Here, we demonstrate a novel method to determine the in-plane diffusion length of photogenerated carriers in layered nanoplatelets using local time-resolved photoluminescence. Also, the in-plane carrier diffusion length of 1.82 μm is obtained for an exfoliated (BA)2PbI4 (BA = CH3(CH2)3NH3) perovskite nanoplatelet. This method is particularly useful for weak luminescent materials and the materials that are easily damaged by long-term laser beam because of the high detection sensitivity. This technique is extendable to other layered materials and therefore plays a valuable role in the development and optimization of two-dimensional (2D) and three-dimensional (3D) semiconductor materials and devices for photovoltaic and photonic applications.

KW - diffusion length

KW - edge-trapping state

KW - surface recombination velocity

KW - time-resolved photoluminescence

KW - two-dimensional (2D) Ruddlesden−Popper perovskites (RPPs) nanoplatelet

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ER -

Determining in-plane carrier diffusion in two-dimensional perovskite using local time-resolved photoluminescence

Abstract

Keywords

UN SDGs

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