Temporally Tracking Exciton Funneling Process in Strain Gradient

Yan Zeng; Zhe Li; Zhenwei Ou; Cheng Wang; Jiakai Yan; Wenbo Li; Yan Li; Wei Dai; Guoquan Gao; Takashi Taniguchi; Kenji Watanabe; Xiaoze Liu; Tong Zhu; Ti Wang; Hongxing Xu

doi:10.1002/smll.202501800

Temporally Tracking Exciton Funneling Process in Strain Gradient

Yan Zeng
, Zhe Li
, Zhenwei Ou
, Cheng Wang
, Jiakai Yan
, Wenbo Li
, Yan Li
, Wei Dai
, Guoquan Gao
, Takashi Taniguchi
, Kenji Watanabe
, Xiaoze Liu
, Tong Zhu
, Ti Wang^*
, Hongxing Xu^*

^*Corresponding author for this work

Wuhan University
Beijing Institute of Technology
National Institute for Materials Science Tsukuba
Wuhan Institute of Quantum Technology
Henan Province Academy of Medical Sciences

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

Abstract

Manipulation of exciton transport not only enables control over the information conveyed by excitons but also facilitates the creation of novel quantum states, making it a crucial element in excitonic quantum devices. Due to the neutral nature of excitons, strain manipulation provides a more potent and efficient avenue for exciton transport than electric field control. To explore the spatial and temporal funneling process of excitons within a strain gradient, ultrafast and time-resolved readout techniques are utilized. Employing transient absorption microscopy, the movement of excitons within the strain gradient is monitored, a phenomenon described by a 1D diffusion equation that incorporates the strain gradient. The results demonstrate that strain not only dictates the direction of exciton flow but also accelerates the rate of exciton transport. These findings highlight a fundamental alteration of exciton transport properties in strained 2D materials, offering significant implications for both solid-state science and excitonic devices.

Original language	English
Article number	2501800
Journal	Small
Volume	21
Issue number	32
DOIs	https://doi.org/10.1002/smll.202501800
Publication status	Published - 14 Aug 2025
Externally published	Yes

Keywords

exciton transport
funneling process
strain gradient
transient absorption microscopy

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10.1002/smll.202501800

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title = "Temporally Tracking Exciton Funneling Process in Strain Gradient",

abstract = "Manipulation of exciton transport not only enables control over the information conveyed by excitons but also facilitates the creation of novel quantum states, making it a crucial element in excitonic quantum devices. Due to the neutral nature of excitons, strain manipulation provides a more potent and efficient avenue for exciton transport than electric field control. To explore the spatial and temporal funneling process of excitons within a strain gradient, ultrafast and time-resolved readout techniques are utilized. Employing transient absorption microscopy, the movement of excitons within the strain gradient is monitored, a phenomenon described by a 1D diffusion equation that incorporates the strain gradient. The results demonstrate that strain not only dictates the direction of exciton flow but also accelerates the rate of exciton transport. These findings highlight a fundamental alteration of exciton transport properties in strained 2D materials, offering significant implications for both solid-state science and excitonic devices.",

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day = "14",

doi = "10.1002/smll.202501800",

language = "English",

volume = "21",

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TY - JOUR

T1 - Temporally Tracking Exciton Funneling Process in Strain Gradient

AU - Zeng, Yan

AU - Li, Zhe

AU - Ou, Zhenwei

AU - Wang, Cheng

AU - Yan, Jiakai

AU - Li, Wenbo

AU - Li, Yan

AU - Dai, Wei

AU - Gao, Guoquan

AU - Taniguchi, Takashi

AU - Watanabe, Kenji

AU - Liu, Xiaoze

AU - Zhu, Tong

AU - Wang, Ti

AU - Xu, Hongxing

PY - 2025/8/14

Y1 - 2025/8/14

N2 - Manipulation of exciton transport not only enables control over the information conveyed by excitons but also facilitates the creation of novel quantum states, making it a crucial element in excitonic quantum devices. Due to the neutral nature of excitons, strain manipulation provides a more potent and efficient avenue for exciton transport than electric field control. To explore the spatial and temporal funneling process of excitons within a strain gradient, ultrafast and time-resolved readout techniques are utilized. Employing transient absorption microscopy, the movement of excitons within the strain gradient is monitored, a phenomenon described by a 1D diffusion equation that incorporates the strain gradient. The results demonstrate that strain not only dictates the direction of exciton flow but also accelerates the rate of exciton transport. These findings highlight a fundamental alteration of exciton transport properties in strained 2D materials, offering significant implications for both solid-state science and excitonic devices.

AB - Manipulation of exciton transport not only enables control over the information conveyed by excitons but also facilitates the creation of novel quantum states, making it a crucial element in excitonic quantum devices. Due to the neutral nature of excitons, strain manipulation provides a more potent and efficient avenue for exciton transport than electric field control. To explore the spatial and temporal funneling process of excitons within a strain gradient, ultrafast and time-resolved readout techniques are utilized. Employing transient absorption microscopy, the movement of excitons within the strain gradient is monitored, a phenomenon described by a 1D diffusion equation that incorporates the strain gradient. The results demonstrate that strain not only dictates the direction of exciton flow but also accelerates the rate of exciton transport. These findings highlight a fundamental alteration of exciton transport properties in strained 2D materials, offering significant implications for both solid-state science and excitonic devices.

KW - exciton transport

KW - funneling process

KW - strain gradient

KW - transient absorption microscopy

UR - https://www.scopus.com/pages/publications/105007756599

U2 - 10.1002/smll.202501800

DO - 10.1002/smll.202501800

M3 - Article

AN - SCOPUS:105007756599

SN - 1613-6810

VL - 21

JO - Small

JF - Small

IS - 32

M1 - 2501800

ER -

Temporally Tracking Exciton Funneling Process in Strain Gradient

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Keywords

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