Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 126, Issue 28, Pages 11674-11679Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.2c03107
Keywords
-
Funding
- KAKENHI [JP21H04638, JP16H06520, JP16H06513, JP17H05257, 19J14834]
- (JSPS Research Fellowship) [PMJFR201M]
- JST FOREST Programme
Ask authors/readers for more resources
This study discovered a mechanism for the recycling of excitons from surface defects in quantum dots, providing a new approach for efficient utilization of excitons in quantum dots.
Surface defects are pervasive in quantum dots (QDs) and are detrimental to their applications. The recycling of trapped excitons is key for the efficient utilization of QDs, while the strategy for this is limited. Here, we discovered a unique recycling process for deep trapped excitons in molecule coordinated defect-rich QD systems. Triplet-triplet energy transfer (TTET) from defect-rich QDs to surface-attached perylene-3-carboxylic acid (Pe) was investigated at a low temperature (77 K), and the contribution of defect state was suggested the Auger-assisted recycling process of the defect-trapped carriers, having insufficient energy for TTET. The discovery of TTET via exciton recycling from defects provides a new way to reuse untapped excitons in QDs and QD devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available