Green light emission in CsPbBr3 quantum dots: theoretical and experimental insight

2020 ◽  
Author(s):  
Abhishek Kumar ◽  
Nivedita Pandey ◽  
Suryansh Dongre ◽  
Subhananda Chakrabarti
Keyword(s):  
Quantum Dots ◽  
Light Emission ◽  
Green Light ◽  
Green Light Emission ◽  
Cspbbr3 Quantum Dots

scholarly journals Highly pure green light emission of perovskite CsPbBr_3 quantum dots and their application for green light-emitting diodes

2016 ◽  
Vol 24 (13) ◽  
pp. 15071 ◽  
Author(s):  
Cunlong Li ◽  
Zhigang Zang ◽  
Weiwei Chen ◽  
Zhiping Hu ◽  
Xiaosheng Tang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Green Light ◽  
Light Emitting ◽  
Green Light Emission

scholarly journals Fabrication of Thin Films from Powdered Cesium Lead Bromide (CsPbBr3) Perovskite Quantum Dots for Coherent Green Light Emission

ACS Omega ◽  
2020 ◽  
Vol 5 (46) ◽  
pp. 30111-30122 ◽  
Author(s):  
Saif M. H. Qaid ◽  
Hamid M. Ghaithan ◽  
Bandar Ali Al-Asbahi ◽  
Abdulaziz Alqasem ◽  
Abdullah S. Aldwayyan
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Light Emission ◽  
Green Light ◽  
Green Light Emission ◽  
Lead Bromide ◽  
Perovskite Quantum Dots

scholarly journals Degradation dynamics of quantum dots in white LED applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hsiao-Chien Chen ◽  
Abdul Shabir ◽  
Cher Ming Tan ◽  
Preetpal Singh ◽  
Jia-Hung Lin
Keyword(s):  
Quantum Dots ◽  
Light Intensity ◽  
White Light ◽  
Density Functional ◽  
Light Emission ◽  
Green Light ◽  
Blue Shift ◽  
Practical Applications ◽  
Initial Stage ◽  
Green Light Emission

AbstractQuantum Dots (QDs) are being investigated in a hybrid white light LED structure which inculcates phosphor in the package with a blue LED chip as the light source recently. In this work, Zn doped CdS QD with ZnS shell together with green light emission phosphor is used. Upon prolonged operation, degradation of the LEDs due to the degradation of QDs is observed, which can limit its practical applications. The degradation includes intensity reduction as well as blue shift of the emitted wavelength from the white light. Three stages of degradation are observed, namely an enhancement state where light intensity is found to increase, followed by a rapid degradation stage where light intensity decreases rapidly, and finally a slower degradation stage where the degradation rate of light intensity slows down and continues till the end of the test. Through various detail material analysis, with confirmation from the density functional theory (DFT) calculations, we find that the degradation of the LEDs is due to the time evolving degradation of CdS core structure, beginning from the oxidation of sulfur vacancy of CdS QDs by the nearby oxygen atoms as a result of imperfection of the ZnS protective coating around the QDs in the presence of blue light. This oxidation renders a transformation of CdS into CdO at the initial stage. The final stage is the formation of CdSO4 via some intermediate processes.

Colour- and structure-stable CsPbBr3-CsPb2Br5 compounded quantum dots with tuneable blue and green light emission

2018 ◽  
Vol 767 ◽  
pp. 98-105 ◽  
Author(s):  
Pengjie Song ◽  
Bo Qiao ◽  
Dandan Song ◽  
Zhiqin Liang ◽  
Di Gao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Emission ◽  
Green Light ◽  
Green Light Emission

High-efficiency circularly polarized green light emission from GaN-based laser diodes integrated with GaN metasurface quarterwave plate

2021 ◽  
Vol 119 (24) ◽  
pp. 241103
Author(s):  
Miao Wang ◽  
Yu Lin ◽  
Jue-Min Yi ◽  
De-Yao Li ◽  
Jian-Ping Liu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emission ◽  
Laser Diodes ◽  
Green Light ◽  
Circularly Polarized ◽  
Green Light Emission

Blue-Green Light Emission from Self-Assembled Bipyridinium Thin Films

1998 ◽  
Vol 27 (9) ◽  
pp. 909-910 ◽  
Author(s):  
Haipeng Zheng ◽  
Ruifeng Zhang ◽  
Ying Wu ◽  
Jiacong Shen
Keyword(s):  
Thin Films ◽  
Light Emission ◽  
Green Light ◽  
Green Light Emission ◽  
Self Assembled
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