Hybrid perovskite exchange of PbS quantum dots for fast and high-detectivity visible–near-infrared photodetectors

2020 ◽  
Vol 8 (23) ◽  
pp. 7812-7819
Author(s):  
Longfei Mi ◽  
Yajing Chang ◽  
Yan Zhang ◽  
Enze Xu ◽  
Yang Jiang
Keyword(s):  
Quantum Dots ◽  
Ligand Exchange ◽  
High Performance ◽  
Near Infrared ◽  
Exchange Process ◽  
Infrared Photodetectors ◽  
Hybrid Perovskite ◽  
Pbs Quantum Dots

A hybrid perovskite decorated with PbS-QDs by using a ligand exchange process to fabricate high-performance photodetectors.

High-performance near-infrared photodetectors based on C3N quantum dots integrated with single-crystal graphene

2021 ◽  
Author(s):  
Yun Zhao ◽  
Xiaoqiang Feng ◽  
Menghan Zhao ◽  
Xiaohu Zheng ◽  
Zhiduo Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Single Crystal ◽  
High Performance ◽  
Near Infrared ◽  
Fast Response ◽  
Local Electric Field ◽  
Infrared Photodetectors ◽  
Photocurrent Response

Employing C3N QD-integrated single-crystal graphene, photodetectors exhibited a distinct photocurrent response at 1550 nm. The photocurrent map revealed that the fast response derive from C3N QDs that enhanced the local electric field near graphene.

scholarly journals Ligand-Length Modification in CsPbBr3 Perovskite Nanocrystals and Bilayers with PbS Quantum Dots for Improved Photodetection Performance

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1297 ◽  
Author(s):  
Juan Navarro Arenas ◽  
Ananthakumar Soosaimanickam ◽  
Hamid Pashaei Adl ◽  
Rafael Abargues ◽  
Pablo P. Boix ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Optical Sensors ◽  
Ligand Exchange ◽  
Near Infrared ◽  
Future Internet ◽  
Single Step ◽  
Perovskite Nanocrystals ◽  
Internet Of Things Technology ◽  
Pbs Quantum Dots

Nanocrystals surface chemistry engineering offers a direct approach to tune charge carrier dynamics in nanocrystals-based photodetectors. For this purpose, we have investigated the effects of altering the surface chemistry of thin films of CsPbBr3 perovskite nanocrystals produced by the doctor blading technique, via solid state ligand-exchange using 3-mercaptopropionic acid (MPA). The electrical and electro-optical properties of photovoltaic and photoconductor devices were improved after the MPA ligand exchange, mainly because of a mobility increase up to 5 × 10−3 cm 2 / Vs . The same technology was developed to build a tandem photovoltaic device based on a bilayer of PbS quantum dots (QDs) and CsPbBr3 perovskite nanocrystals. Here, the ligand exchange was successfully carried out in a single step after the deposition of these two layers. The photodetector device showed responsivities around 40 and 20 mA/W at visible and near infrared wavelengths, respectively. This strategy can be of interest for future visible-NIR cameras, optical sensors, or receivers in photonic devices for future Internet-of-Things technology.

High performance visible–near-infrared PbS-quantum-dots/indium Schottky diodes for photodetectors

2016 ◽  
Vol 28 (5) ◽  
pp. 055202 ◽  
Author(s):  
Longfei Mi ◽  
Hui Wang ◽  
Yan Zhang ◽  
Xudong Yao ◽  
Yajing Chang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Near Infrared ◽  
Schottky Diodes ◽  
Pbs Quantum Dots

scholarly journals Colloidal PbS quantum dots for visible-to-near-infrared optical-internet-of-things

2021 ◽  
pp. 1-1
Author(s):  
Aigerim Tankimanova ◽  
Chun Hong Kang ◽  
Omar Alkhazragi ◽  
Haodong Tang ◽  
Meiwei Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Internet Of Things ◽  
Near Infrared ◽  
Optical Internet ◽  
Pbs Quantum Dots

scholarly journals PEGylated Phospholipid Micelle-Encapsulated Near-Infrared PbS Quantum Dots for in vitro and in vivo Bioimaging

Theranostics ◽  
2012 ◽  
Vol 2 (7) ◽  
pp. 723-733 ◽  
Author(s):  
Rui Hu ◽  
Wing-Cheung Law ◽  
Guimiao Lin ◽  
Ling Ye ◽  
Jianwei Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Pbs Quantum Dots

scholarly journals Stable DHLA–PEG capped PbS quantum dots: from synthesis to near-infrared biomedical imaging

2018 ◽  
Vol 6 (4) ◽  
pp. 550-555 ◽  
Author(s):  
F. Zamberlan ◽  
L. Turyanska ◽  
A. Patanè ◽  
Z. Liu ◽  
H. E. L. Williams ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Biomedical Imaging ◽  
Near Infrared ◽  
Non Invasive ◽  
Pbs Nanocrystals ◽  
Pbs Quantum Dots

Stability, biocompatibility and near-infrared photoluminescence of PbS nanocrystals capped with PEG-based ligands open up realistic prospects for non-invasive bioimaging applications.

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