scholarly journals Role of Organosulfur Compounds in the Growth and Final Surface Chemistry of PbS Quantum Dots

2014 ◽  
Vol 26 (11) ◽  
pp. 3377-3384 ◽  
Author(s):  
Martin R. McPhail ◽  
Emily A. Weiss
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Organosulfur Compounds ◽  
Final Surface ◽  
Pbs Quantum Dots

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.

Role of Nd3+ ions on the nucleation and growth of PbS quantum dots (QDs) in silicate glasses

2017 ◽  
Vol 100 (7) ◽  
pp. 2879-2884 ◽  
Author(s):  
Won Ji Park ◽  
Min Gyu Kim ◽  
Ju Eun Kim ◽  
Jing Wang ◽  
Ho Jeong Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nucleation And Growth ◽  
Silicate Glasses ◽  
Pbs Quantum Dots

scholarly journals Embedding PbS Quantum Dots (QDs) in Pb-Halide Perovskite Matrices: QD Surface Chemistry and Antisolvent Effects on QD Dispersion and Confinement Properties

2020 ◽  
Vol 2 (11) ◽  
pp. 1464-1472
Author(s):  
E. Ashley Gaulding ◽  
Xihan Chen ◽  
Ye Yang ◽  
Steven P. Harvey ◽  
Bobby To ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Halide Perovskite ◽  
Pbs Quantum Dots

The role of surface chemistry in determining in vivo biodistribution and toxicity of CdSe/ZnS core–shell quantum dots

Biomaterials ◽  
2013 ◽  
Vol 34 (34) ◽  
pp. 8741-8755 ◽  
Author(s):  
Yuan Tang ◽  
Songling Han ◽  
Hongmei Liu ◽  
Xin Chen ◽  
Li Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Core Shell ◽  
In Vivo Biodistribution

Size-Tunable, Bright, and Stable PbS Quantum Dots: A Surface Chemistry Study

ACS Nano ◽  
2011 ◽  
Vol 5 (3) ◽  
pp. 2004-2012 ◽  
Author(s):  
Iwan Moreels ◽  
Yolanda Justo ◽  
Bram De Geyter ◽  
Katrien Haustraete ◽  
José C. Martins ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Pbs Quantum Dots

Surface chemistry of as-synthesized and air-oxidized PbS quantum dots

2018 ◽  
Vol 457 ◽  
pp. 1-10 ◽  
Author(s):  
Hossein Beygi ◽  
Seyed Abdolkarim Sajjadi ◽  
Abolfazl Babakhani ◽  
Jeff F. Young ◽  
Frank C.J.M. van Veggel
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Pbs Quantum Dots

Surface chemistry of arenethiolate-capped PbS quantum dots and application as colloidally stable photovoltaic ink

2014 ◽  
Vol 560 ◽  
pp. 2-9 ◽  
Author(s):  
Carlo Giansante ◽  
Luigi Carbone ◽  
Cinzia Giannini ◽  
Davide Altamura ◽  
Zoobia Ameer ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Pbs Quantum Dots

Porous Semiconductor Films For Photo-Electrical Applications

1996 ◽  
Vol 426 ◽  
Author(s):  
R. Könenkamp ◽  
P. Hoyer
Keyword(s):  
Quantum Dots ◽  
Semiconductor Devices ◽  
Experimental Results ◽  
Semiconductor Films ◽  
Trap States ◽  
Porous Films ◽  
Nano Crystalline ◽  
Pbs Quantum Dots

AbstractWe report on the preparation and characterization of semiconductor devices based on porous nano-crystalline TiO2 films. We present experimental results on photoconduction to elucidate the role of trap states in this material. We then analyse the behavior of a SnO2/TiO2/Pt Schottkydiode and finally present spectral photoresponse data obtained on a hetero-junction between TiO2 films and PbS quantum dots. We find that the porous films hold some promise for electronic applications, in which fast reponse times are not required.

scholarly journals Role of interband and photoinduced absorption in the nonlinear refraction and absorption of resonantly excited PbS quantum dots around 1550 nm

2012 ◽  
Vol 85 (11) ◽  
Author(s):  
Abdoulghafar Omari ◽  
Iwan Moreels ◽  
Francesco Masia ◽  
Wolfgang Langbein ◽  
Paola Borri ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nonlinear Refraction ◽  
Photoinduced Absorption ◽  
Pbs Quantum Dots

scholarly journals Dynamic Ligand Surface Chemistry of Excited PbS Quantum Dots

2020 ◽  
Vol 11 (6) ◽  
pp. 2291-2297 ◽  
Author(s):  
Eric R. Kennehan ◽  
Kyle T. Munson ◽  
Grayson S. Doucette ◽  
Ashley R. Marshall ◽  
Matthew C. Beard ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Chemistry ◽  
Pbs Quantum Dots
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