Förster resonance energy transfer outpaces Auger recombination in CdTe/CdS quantum dots-rhodamine101 molecules system upon compression
Version 2 2021-08-06, 13:54
Version 1 2021-08-06, 13:54
Posted on 2021-08-06 - 13:54
Förster resonance energy transfer (FRET) and Auger recombination in quantum dots (QDs)-molecules system are important mechanisms for affecting performance of their optoelectronic and photosynthesis devices. However, exploring an effective strategy to promote FRET and suppress Auger recombination simultaneously remains a daunting challenge. Here, we report that FRET process is promoted and Auger recombination process is suppressed in CdTe/CdS QDs-Rhodamine101 (Rh101) molecules system upon compression. The greatly improved FRET is attributed to the shortened donor-acceptor distance and increased the number of molecules attached to QDs induced by pressure. The reduced Auger recombination is ascribed to the formation of an alloy layer at the core/shell interface. The FRET can occur 70 times faster than Auger recombination under a high pressure of 0.9GPa. Our findings demonstrate that high pressure is a robust tool to boost FRET and simultaneously suppress Auger recombination, and provides a new route to QDs-molecules applications.
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Li, Bo; Liu, Yuliang; Wan, Yongfeng; Zhu, Lixia; shi, ying; Liu, Cailong; et al. (2021). Förster resonance energy transfer outpaces Auger recombination in CdTe/CdS quantum dots-rhodamine101 molecules system upon compression. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.5468838.v2
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AUTHORS (9)
BL
Bo Li
YL
Yuliang Liu
YW
Yongfeng Wan
LZ
Lixia Zhu
ys
ying shi
CL
Cailong Liu
MJ
Mingxing Jin
JG
Jianbo Gao
DD
Dajun Ding