Dynamics of charge-transfer excitons in a transition metal dichalcogenide heterostructure

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8485-8492
Author(s):  
Ang Bian ◽  
Dawei He ◽  
Shengcai Hao ◽  
Yang Fu ◽  
Lu Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Cooling Process ◽  
Charge Transfer Excitons

Hot charge-transfer excitons are formed in a transition metal dichalcogenide trilayer heterostructure and diffuse during their cooling process.

Charge Transfer Exciton and Spin Flipping at Organic–Transition-Metal Dichalcogenide Interfaces

ACS Nano ◽  
2017 ◽  
Vol 11 (10) ◽  
pp. 10184-10192 ◽  
Author(s):  
Tika R. Kafle ◽  
Bhupal Kattel ◽  
Samuel D. Lane ◽  
Ti Wang ◽  
Hui Zhao ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Organic Transition

Ultrafast Charge Transfer in Perovskite Nanowire/2D Transition Metal Dichalcogenide Heterostructures

2018 ◽  
Vol 9 (7) ◽  
pp. 1655-1662 ◽  
Author(s):  
Qiyi Fang ◽  
Qiuyu Shang ◽  
Liyun Zhao ◽  
Rui Wang ◽  
Zhepeng Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Ultrafast Charge Transfer

Charge Transfer Properties of Heterostructures Formed by Bi 2 O 2 Se and Transition Metal Dichalcogenide Monolayers

Small ◽  
2021 ◽  
pp. 2106078
Author(s):  
Shuangyan Liu ◽  
Dawei He ◽  
Congwei Tan ◽  
Shaohua Fu ◽  
Xiuxiu Han ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Transfer Properties

scholarly journals Photoinduced charge transfer in transition metal dichalcogenide heterojunctions – towards next generation energy technologies

2020 ◽  
Vol 13 (9) ◽  
pp. 2684-2740 ◽  
Author(s):  
Dana B. Sulas-Kern ◽  
Elisa M. Miller ◽  
Jeffrey L. Blackburn
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Photoinduced Charge Transfer ◽  
Energy Applications ◽  
Energy Technologies ◽  
Broad Array ◽  
Metal Dichalcogenides ◽  
Photoinduced Charge

We review recent strides in understanding and manipulating photoinduced charge transfer in heterojunctions between 2D transition metal dichalcogenides and other semiconductors, with implications for a broad array of energy applications.

Effects of in-plane stiffness and charge transfer on thermal expansion of monolayer transition metal dichalcogenide

2015 ◽  
Vol 24 (2) ◽  
pp. 026501 ◽  
Author(s):  
Zhan-Yu Wang ◽  
Yan-Li Zhou ◽  
Xue-Qing Wang ◽  
Fei Wang ◽  
Qiang Sun ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide

scholarly journals Deciphering asymmetric charge transfer at transition metal dichalcogenide–graphene interface by helicity-resolved ultrafast spectroscopy

2021 ◽  
Vol 7 (34) ◽  
pp. eabg2999
Author(s):  
Hongzhi Zhou ◽  
Yuzhong Chen ◽  
Haiming Zhu
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Ultrafast Spectroscopy ◽  
Spin Dynamics ◽  
Hole Injection ◽  
Transition Metal Dichalcogenide ◽  
Transfer Processes ◽  
Spin Polarized ◽  
Graphene Interface ◽  
Interfacial Charge

Transition metal dichalcogenide (TMD)/graphene (Gr) heterostructures constitute a key component for two-dimensional devices. The operation of TMD/Gr devices relies on interfacial charge/energy transfer processes, which remains unclear and challenging to unravel. Fortunately, the coupled spin and valley index in TMDs adds a new degree of freedom to the charges and, thus, another dimension to spectroscopy. Here, by helicity-resolved ultrafast spectroscopy, we find that photoexcitation in TMDs transfers to graphene by asynchronous charge transfer, with one type of charge transferring in the order of femtoseconds and the other in picoseconds. The rate correlates well with energy offset between TMD and graphene, regardless of compositions and charge species. Spin-polarized hole injection or long-lived polarized hole can be achieved with deliberately designed heterostructures. This study shows helicity-resolved ultrafast spectroscopy as a powerful and facile approach to reveal the fundamental and complex charge/spin dynamics in TMD-based heterostructures, paving the way toward valleytronic and optoelectronic applications.

scholarly journals Observation of charge transfer in mixed-dimensional heterostructures formed by transition metal dichalcogenide monolayers and PbS quantum dots

2019 ◽  
Vol 100 (23) ◽  
Author(s):  
Peymon Zereshki ◽  
Mohammad Mahdi Tavakoli ◽  
Pavel Valencia-Acuna ◽  
Ji-Hoon Park ◽  
Jing Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Pbs Quantum Dots

scholarly journals Microsecond charge separation at heterojunctions between transition metal dichalcogenide monolayers and single-walled carbon nanotubes

2019 ◽  
Vol 6 (10) ◽  
pp. 2103-2111 ◽  
Author(s):  
Dana B. Sulas-Kern ◽  
Hanyu Zhang ◽  
Zhaodong Li ◽  
Jeffrey L. Blackburn
Keyword(s):  
Carbon Nanotubes ◽  
Charge Transfer ◽  
Transition Metal ◽  
Charge Separation ◽  
Single Walled Carbon Nanotubes ◽  
Transition Metal Dichalcogenide ◽  
Single Walled Carbon ◽  
Photocurrent Generation ◽  
Walled Carbon Nanotubes ◽  
Interfacial Charge

Heterojunctions of transition metal dichalcogenide monolayers and single-walled carbon nanotubes are promising for photocatalysis and photocurrent generation, with microsecond timescale charge separation and sub-picosecond interfacial charge transfer.

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