Imperial College London
Dr Xingyuan Shi

Dr Xingyuan Shi

Faculty of Natural Sciences, Department of Physics

Research Associate in Materials Chemistry
 
 
 
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Contact

 

xingyuan.shi

 
 
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Location

 

H704Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wan:2020:10.1021/acsami.0c09139,
author = {Wan, L and Wade, J and Shi, X and Xu, S and Fuchter, MJ and Campbell, AJ},
doi = {10.1021/acsami.0c09139},
journal = {ACS Applied Materials & Interfaces},
pages = {39471--39478},
title = {Highly Efficient Inverted Circularly Polarized Organic Light-Emitting Diodes},
url = {http://dx.doi.org/10.1021/acsami.0c09139},
volume = {12},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Circularly polarized (CP) electroluminescence has been demonstrated as a strategy to improve the performance of organic light-emitting diode (OLED) displays. CP emission can be generated from both small-molecule and polymer OLEDs (SM-OLEDs and PLEDs), but to date, these devices suffer from low dissymmetry factors (g-factor < 0.1), poor device performance, or a combination of the two. Here, we demonstrate the first CP-PLED employing an inverted device architecture. Through this approach, we demonstrate a highly efficient CP-PLED, with a current efficiency of 16.4 cd/A, a power efficiency of 16.6 lm/W, a maximum luminance of over 28,500 cd/m2, and a high EL dissymmetry (gEL) of 0.57. We find that the handedness of the emitted light is sensitive to the PLED device architecture: the sign of CP-EL from an identically prepared active layer reverses between inverted and conventional devices. The inverted structure affords the first demonstration of CP-PLEDs exhibiting both high efficiency and high dissymmetry—the two figures of merit which, until now, have been difficult to achieve at the same time. We also highlight device architecture and associated internal electric field to be a previously unexplored means to control the handedness of CP emission. Our findings significantly broaden the versatility of CP emissive devices and should enable their further application in a variety of other CP-dependent technologies.
AU  - Wan,L
AU  - Wade,J
AU  - Shi,X
AU  - Xu,S
AU  - Fuchter,MJ
AU  - Campbell,AJ
DO  - 10.1021/acsami.0c09139
EP  - 39478
PY  - 2020///
SN  - 1944-8244
SP  - 39471
TI  - Highly Efficient Inverted Circularly Polarized Organic Light-Emitting Diodes
T2  - ACS Applied Materials & Interfaces
UR  - http://dx.doi.org/10.1021/acsami.0c09139
UR  - https://www.webofscience.com/wos/woscc/full-record/WOS:000569268800063
UR  - https://pubs.acs.org/doi/10.1021/acsami.0c09139
UR  - http://hdl.handle.net/10044/1/81703
VL  - 12
ER  -
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