Energy Level Modification in Lead Sulfide Quantum Dot Thin Films through Ligand Exchange

ACS Nano ◽  
2014 ◽  
Vol 8 (6) ◽  
pp. 5863-5872 ◽  
Author(s):  
Patrick R. Brown ◽  
Donghun Kim ◽  
Richard R. Lunt ◽  
Ni Zhao ◽  
Moungi G. Bawendi ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Level ◽  
Quantum Dot ◽  
Lead Sulfide ◽  
Ligand Exchange

Lead Sulfide Quantum Dot Photodetector with Enhanced Responsivity through a Two-Step Ligand-Exchange Method

2019 ◽  
Vol 2 (10) ◽  
pp. 6135-6143 ◽  
Author(s):  
Haodong Tang ◽  
Jialin Zhong ◽  
Wei Chen ◽  
Kanming Shi ◽  
Guanding Mei ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Lead Sulfide ◽  
Ligand Exchange ◽  
Exchange Method

scholarly journals Temperature dependent behaviour of lead sulfide quantum dot solar cells and films

2016 ◽  
Vol 9 (9) ◽  
pp. 2916-2924 ◽  
Author(s):  
Mark J. Speirs ◽  
Dmitry N. Dirin ◽  
Mustapha Abdu-Aguye ◽  
Daniel M. Balazs ◽  
Maksym V. Kovalenko ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Lead Sulfide ◽  
Power Conversion ◽  
Temperature Dependent ◽  
Quantum Dot Solar Cells ◽  
Dependent Behaviour

The temperature dependent behaviour of PbS QD solar cells and thin films was investigated, and guidelines for further improvement of the power conversion efficiency are given.

A p-Type PbS Quantum Dot Ink with Improved Stability for Solution Processable Optoelectronics

2021 ◽  
Author(s):  
Fiaz Ahmed ◽  
John Hardin Dunlap ◽  
Perry J. Pellechia ◽  
Andrew Greytak
Keyword(s):  
Quantum Dot ◽  
Ligand Exchange ◽  
Chemical Characterization ◽  
Single Step ◽  
Improved Stability ◽  
Solution Processable ◽  
P Type ◽  
Pbs Quantum Dot

A highly stable p-type PbS-QDs ink is prepared using a single-step biphasic ligand exchange route, overcoming instability encountered in previous reports. Chemical characterization of the ink reveals 3-mercaptopriopionic acid (MPA)...

scholarly journals Effect of Growth Temperature on the Characteristics of CsPbI3-Quantum Dots Doped Perovskite Film

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4439
Author(s):  
Shui-Yang Lien ◽  
Yu-Hao Chen ◽  
Wen-Ray Chen ◽  
Chuan-Hsi Liu ◽  
Chien-Jung Huang
Keyword(s):  
Thin Films ◽  
Thermal Stability ◽  
Quantum Dots ◽  
Quantum Dot ◽  
Growth Temperature ◽  
Electron Mobility ◽  
Surface Defects ◽  
Different Temperatures ◽  
Pb Doping ◽  
Pristine Film

In this study, adding CsPbI3 quantum dots to organic perovskite methylamine lead triiodide (CH3NH3PbI3) to form a doped perovskite film filmed by different temperatures was found to effectively reduce the formation of unsaturated metal Pb. Doping a small amount of CsPbI3 quantum dots could enhance thermal stability and improve surface defects. The electron mobility of the doped film was 2.5 times higher than the pristine film. This was a major breakthrough for inorganic quantum dot doped organic perovskite thin films.

Synthesis of multifunctional CdSe and Pd quantum dot decorated CdSe thin films for photocatalytic, electrocatalytic and thermoelectric applications

2021 ◽  
pp. 101149
Author(s):  
Sk. Taheruddin Ahamed ◽  
Chiranjit Kulsi ◽  
Kirti ◽  
Dipali Banerjee ◽  
Divesh Narayan Srivastava ◽  
...  
Keyword(s):  
Thin Films ◽  
Quantum Dot

Patternable Quantum-Dot Photoresist with High Photolithographic Uniformity

2021 ◽  
Vol 13 (4) ◽  
pp. 624-631
Author(s):  
Jianyao Lin ◽  
Yu Chen ◽  
Yun Ye ◽  
Sheng Xu ◽  
Tailiang Guo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Functional Groups ◽  
Ligand Exchange ◽  
Surface Ligands ◽  
Dispersion Mechanism ◽  
Film Forming ◽  
Photolithography Process ◽  
Color Conversion

We present a ligand-exchange-free photo-patternable quantum-dot photoresist (QDPR) with high photolithographic uniformity. The dispersion mechanism between the QD’s surface ligands and the functional groups of photoresist polymers are studied. Results show that the dispersibility and photoluminescent intensity of this QDPR can be both improved by controlling dispersant and antioxidant. For device demonstration, multi-colored quantum dot color conversion films (QDCCF) were prepared and patterned by a photolithography process. High QD dispersibility and film-forming uniformity were both achieved with this QDCCF. It is believed that the proposed QDPR has the potential to be extensively used in lighting or display applications.

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