Perovskite Quantum Dots Embedded Composite Films Enhancing UV Response of Silicon Photodetectors for Broadband and Solar-Blind Light Detection

2018 ◽  
Vol 6 (16) ◽  
pp. 1800077 ◽  
Author(s):  
Mengjiao Zhang ◽  
Lingxue Wang ◽  
Linghai Meng ◽  
Xian-Gang Wu ◽  
Qinwen Tan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Composite Films ◽  
Light Detection ◽  
Solar Blind ◽  
Perovskite Quantum Dots ◽  
Uv Response

Highly luminescent red emissive perovskite quantum dots-embedded composite films: ligands capping and caesium doping-controlled crystallization process

Nanoscale ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 4942-4947 ◽  
Author(s):  
Xian-gang Wu ◽  
Jialun Tang ◽  
Feng Jiang ◽  
Xiaoxiu Zhu ◽  
Yanliang Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Crystallization Process ◽  
Composite Films ◽  
Perovskite Quantum Dots ◽  
Controlled Crystallization

A ligand and Cs+ were introduced to reduce the solubility between precursors and polymers, resulting in highly luminescent composite films.

scholarly journals Energy Down-Conversion Cs3Cu2Cl5 Nanocrystals for Boosting the Efficiency of UV Photodetector

2021 ◽  
Vol 8 ◽  
Author(s):  
Chengjun Liu ◽  
Lixi Wang ◽  
Fan Fang ◽  
Zihan Zhao ◽  
Jiangyong Pan ◽  
...  
Keyword(s):  
Stokes Shift ◽  
Composite Films ◽  
Lead Free ◽  
Commercial Application ◽  
Uv Photodetector ◽  
Teller Distortion ◽  
Solar Blind ◽  
Jahn Teller ◽  
Uv Response ◽  
Down Conversion

Zero-dimension (0-D) lead halide perovskite nanocrystals (NCs) have attracted a sight of interest in the field of optoelectronic devices due to their outstanding properties, such as high photoluminescence quantum yield (PLQY) and size- and composition-controlled tunable emission wavelengths. However, the toxicity of lead (Pb) element in the lead perovskite NCs is the bottleneck for the commercial application of perovskite NCs. Herein, we report a facile ligand-assisted synthesis to achieve lead-free Cs3Cu2Cl5 NCs with a high PLQY of ∼70% and good stability against environmental oxygen/moisture as a promising down-conversion material. It has good merits of high PLQY and large Stokes shift (∼300 nm) originated from the effect of Jahn–Teller distortion and self-trapped excitons (STEs). Furthermore, the Cs3Cu2Cl5 NCs embedded composite films (NCCFs) were utilized to enhance the ultraviolet (UV) response of silicon (Si) photodetectors. External quantum efficiency (EQE) measurements show that the UV response can be greatly improved from 3.3 to 19.9% @ 295 nm based on NCCFs combined with Si photodiodes. Our work offers an effective approach to develop highly efficient and stable lead-free Cs3Cu2Cl5 NCs for the application in the solar-blind UV photodetector.

Perovskite Quantum Dots: Opportunities and Challenges

2020 ◽  
Vol 41 (8) ◽  
pp. 940-944
Author(s):  
ZENG Hai-bo ◽  
◽  
DONG Yu-hui ◽  
Keyword(s):  
Quantum Dots ◽  
Perovskite Quantum Dots

scholarly journals Achieving Optical Gain of the CsPbBr3 Perovskite Quantum Dots and Influence of the Variable Stripe Length Method

ACS Omega ◽  
2021 ◽  
Author(s):  
Saif M. H. Qaid ◽  
Hamid M. Ghaithan ◽  
Bandar Ali Al-Asbahi ◽  
Abdullah S. Aldwayyan
Keyword(s):  
Quantum Dots ◽  
Optical Gain ◽  
Perovskite Quantum Dots ◽  
Stripe Length
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