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 ◽  
...  
ACS Photonics ◽  
2021 ◽  
Author(s):  
Jongchan Kim ◽  
Siwei Zhang ◽  
Shaocong Hou ◽  
Byungjun Lee ◽  
Guodan Wei ◽  
...  

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8485-8492
Author(s):  
Ang Bian ◽  
Dawei He ◽  
Shengcai Hao ◽  
Yang Fu ◽  
Lu Zhang ◽  
...  

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


2018 ◽  
Vol 9 (7) ◽  
pp. 1655-1662 ◽  
Author(s):  
Qiyi Fang ◽  
Qiuyu Shang ◽  
Liyun Zhao ◽  
Rui Wang ◽  
Zhepeng Zhang ◽  
...  

Small ◽  
2021 ◽  
pp. 2106078
Author(s):  
Shuangyan Liu ◽  
Dawei He ◽  
Congwei Tan ◽  
Shaohua Fu ◽  
Xiuxiu Han ◽  
...  

2020 ◽  
Vol 13 (9) ◽  
pp. 2684-2740 ◽  
Author(s):  
Dana B. Sulas-Kern ◽  
Elisa M. Miller ◽  
Jeffrey L. Blackburn

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.


2015 ◽  
Vol 24 (2) ◽  
pp. 026501 ◽  
Author(s):  
Zhan-Yu Wang ◽  
Yan-Li Zhou ◽  
Xue-Qing Wang ◽  
Fei Wang ◽  
Qiang Sun ◽  
...  

2021 ◽  
Vol 7 (34) ◽  
pp. eabg2999
Author(s):  
Hongzhi Zhou ◽  
Yuzhong Chen ◽  
Haiming Zhu

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.


2019 ◽  
Vol 100 (23) ◽  
Author(s):  
Peymon Zereshki ◽  
Mohammad Mahdi Tavakoli ◽  
Pavel Valencia-Acuna ◽  
Ji-Hoon Park ◽  
Jing Kong ◽  
...  

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