Blue thermally activated delayed fluorescent emitters having a bicarbazole donor moiety

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 64133-64139 ◽  
Author(s):  
Hyeong Min Kim ◽  
Jeong Min Choi ◽  
Jun Yeob Lee
Keyword(s):  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
Thermally Activated ◽  
High Quantum ◽  
Donor Moiety

Two 3,3′-bicarbazole donor based TADF emitters provided high quantum efficiency above 23% in blue delayed fluorescent devices.

A new rigid diindolocarbazole donor moiety for high quantum efficiency thermally activated delayed fluorescence emitter

2018 ◽  
Vol 6 (6) ◽  
pp. 1343-1348 ◽  
Author(s):  
Kwang Jong Kim ◽  
Gyeong Heon Kim ◽  
Raju Lampande ◽  
Dae Hyun Ahn ◽  
Joon Beom Im ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Electron Donor ◽  
Delayed Fluorescence ◽  
High Quantum Efficiency ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
High Quantum ◽  
Donor Moiety

We report a new electron donor moiety (diindolocarbazole) for high performances of thermally activated delayed fluorescence emitters.

Modulation of optical properties of ZnS QDs embedded glasses through aluminum and manganese doping

2021 ◽  
Author(s):  
Kai Li ◽  
Ying Ye ◽  
Wenchao Zhang ◽  
Yuzhou Hu ◽  
Ying Yang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
Information Display ◽  
Manganese Doping ◽  
High Quantum

Nontoxic cadmium-free ZnS and ZnSe QDs QDs with high quantum efficiency have drawn considerable attention for information display. Applications of ZnS and ZnSe QDs are limited by their short emission...

scholarly journals Highly Efficient Near-Infrared Detector Based on Optically Resonant Dielectric Nanodisks

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 428
Author(s):  
Reza Masoudian Saadabad ◽  
Christian Pauly ◽  
Norbert Herschbach ◽  
Dragomir N. Neshev ◽  
Haroldo T. Hattori ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
High Speed ◽  
Near Infrared ◽  
Infrared Detector ◽  
High Quantum Efficiency ◽  
Fast Detection ◽  
High Quantum ◽  
Resonant Modes ◽  
Infrared Wavelengths ◽  
Dielectric Metasurface

Fast detection of near-infrared (NIR) photons with high responsivity remains a challenge for photodetectors. Germanium (Ge) photodetectors are widely used for near-infrared wavelengths but suffer from a trade-off between the speed of photodetection and quantum efficiency (or responsivity). To realize a high-speed detector with high quantum efficiency, a small-sized photodetector efficiently absorbing light is required. In this paper, we suggest a realization of a dielectric metasurface made of an array of subwavelength germanium PIN photodetectors. Due to the subwavelength size of each pixel, a high-speed photodetector with a bandwidth of 65 GHz has been achieved. At the same time, high quantum efficiency for near-infrared illumination can be obtained by the engineering of optical resonant modes to localize optical energy inside the intrinsic Ge disks. Furthermore, small junction capacitance and the possibility of zero/low bias operation have been shown. Our results show that all-dielectric metasurfaces can improve the performance of photodetectors.

A novel high quantum efficiency SiGe Phototransistor detector

2021 ◽  
Author(s):  
Yang Xiang ◽  
Hongyun Xie ◽  
Yin Sha ◽  
Ruilang Ji ◽  
Fu Zhu ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
High Quantum
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