Role of carrier-transfer in the optical nonlinearity of graphene/Bi2Te3 heterojunctions

Nanoscale ◽  
2020 ◽  
Vol 12 (32) ◽  
pp. 16956-16966 ◽  
Author(s):  
Jia-Chi Lan ◽  
Junpeng Qiao ◽  
Wei-Heng Sung ◽  
Chun-Hu Chen ◽  
Ren-Huai Jhang ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Carrier Transfer

By fabricating graphene/Bi2Te3 heterojunction, the mechanism of carrier-transfer resulting in enhanced optical nonlinearity was investigated. The rapid over-saturation of Bi2Te3 is solved and a better performance is acquired in Q-switched laser.

scholarly journals Deciphering the role of quantum dot size in the ultrafast charge carrier dynamics at the perovskite–quantum dot interface

2020 ◽  
Vol 8 (42) ◽  
pp. 14834-14844
Author(s):  
Piotr Piatkowski ◽  
Sofia Masi ◽  
Pavel Galar ◽  
Mario Gutiérrez ◽  
Thi Tuyen Ngo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Charge Carrier ◽  
Rate Constants ◽  
Transient Absorption ◽  
Carrier Dynamics ◽  
Carrier Transfer ◽  
Charge Carrier Dynamics ◽  
Conduction Bands

Charge-carrier transfer (CT) from the perovskite host to PbS QDs were studied using fs-transient absorption and THz techniques. The CT rate constants increase with the size of QDs due to a change in the position of valence and conduction bands in PbS QDs.

Spectral Dependence of Nanocrystal Photoionization Probability: The Role of Hot-Carrier Transfer

ACS Nano ◽  
2011 ◽  
Vol 5 (6) ◽  
pp. 5045-5055 ◽  
Author(s):  
Lazaro A. Padilha ◽  
István Robel ◽  
Doh C. Lee ◽  
Prashant Nagpal ◽  
Jeffrey M. Pietryga ◽  
...  
Keyword(s):  
Spectral Dependence ◽  
Hot Carrier ◽  
Carrier Transfer

Adjustable optical nonlinearity in d10 cations containing chalcogenides via dp hybridization interaction

2019 ◽  
Vol 48 (8) ◽  
pp. 2592-2597 ◽  
Author(s):  
Jianian Cheng ◽  
Binghua Lei ◽  
Chen Zhou ◽  
Shilie Pan ◽  
Zhihua Yang
Keyword(s):  
Band Gap ◽  
Optical Nonlinearity ◽  
Metal Chalcogenides

The role of d10-cations on band gap and nonlinearity in Cd/Hg-containing metal chalcogenides was investigated using DFT.

Carrier transfer across a 2D-3D semiconductor heterointerface: The role of momentum mismatch

2017 ◽  
Vol 95 (8) ◽  
Author(s):  
T. Kümmell ◽  
U. Hutten ◽  
F. Heyer ◽  
K. Derr ◽  
R.-M. Neubieser ◽  
...  
Keyword(s):  
Carrier Transfer

The role of hydroxyl ions in the evolution of optical nonlinearity of CuO: a Z scan study

2019 ◽  
Vol 6 (11) ◽  
pp. 116202 ◽  
Author(s):  
Riya Sebastian ◽  
M S Swapna ◽  
H V Saritha Devi ◽  
Vimal Raj ◽  
Misha Hari ◽  
...  
Keyword(s):  
Optical Nonlinearity
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