Structure and Charge Carrier Dynamics in Colloidal PbS Quantum Dot Solids

2019 ◽  
Vol 10 (9) ◽  
pp. 2058-2065 ◽  
Author(s):  
Wei Chen ◽  
Jialin Zhong ◽  
Junzi Li ◽  
Nitin Saxena ◽  
Lucas P. Kreuzer ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Pbs Quantum Dot

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.

scholarly journals Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Sung-Min Jung ◽  
Tae Hoon Lee ◽  
Sang Yun Bang ◽  
Soo Deok Han ◽  
Dong-Wook Shin ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Charge Carrier ◽  
Charge Transport ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Carrier Dynamics ◽  
Computational Method ◽  
Optical Characteristics ◽  
Light Emitting ◽  
Charge Carrier Dynamics

AbstractsQuantum dot light-emitting diodes (QD-LEDs) are considered as competitive candidate for next-generation displays or lightings. Recent advances in the synthesis of core/shell quantum dots (QDs) and tailoring procedures for achieving their high quantum yield have facilitated the emergence of high-performance QD-LEDs. Meanwhile, the charge-carrier dynamics in QD-LED devices, which constitutes the remaining core research area for further improvement of QD-LEDs, is, however, poorly understood yet. Here, we propose a charge transport model in which the charge-carrier dynamics in QD-LEDs are comprehensively described by computer simulations. The charge-carrier injection is modelled by the carrier-capturing process, while the effect of electric fields at their interfaces is considered. The simulated electro-optical characteristics of QD-LEDs, such as the luminance, current density and external quantum efficiency (EQE) curves with varying voltages, show excellent agreement with experiments. Therefore, our computational method proposed here provides a useful means for designing and optimising high-performance QD-LED devices.

Charge Carrier Dynamics in Nanostructured Tungsten Trioxide for Solar Driven Water Oxidation

2018 ◽  
Author(s):  
Sacha Corby ◽  
Laia Francas ◽  
Shababa Selim ◽  
Michael Sachs ◽  
Andreas Kafizas ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Oxidation ◽  
Tungsten Trioxide ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics
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