Enhanced photocurrent and responsivity of PbS quantum Dot/ZnO nanoparticle films with amine passivation

被引：0

作者：

Chen, Po-Hsun ^{[1
]}

Pham, Nguyet. N. T. ^{[1
,2
]}

Huang, Pei-Cheng ^{[1
]}

Lin, Yu-Sian ^{[1
]}

Peng, Chia-Tien ^{[3
]}

Lin, Cheng-Hsing ^{[3
]}

Chang, Chih-Ching ^{[1
]}

Chen, Hsueh-Shih ^{[1
,4
,5
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

[2] Univ Sci Vietnam Natl Univ Ho Chi Minh City, Fac Chem, Ho Chi Minh City 70000, Vietnam

[3] AUO Corp, Hsinchu Sci Pk, Hsinchu, Taiwan

[4] Yuan Ze Univ, Coll Engn, Dept Chem Engn & Mat Sci, Taoyuan 32003, Taiwan

[5] Natl Tsing Hua Univ, Coll Semicond Res, Hsinchu 30013, Taiwan

来源：

APPLIED SURFACE SCIENCE ADVANCES | 2025年 / 26卷

关键词：

PBS; IR; Photodetection; Solar; Quantum dots; Sensing; TOTAL-ENERGY CALCULATIONS; PLUS U; ZNO; PERFORMANCE; DOTS;

D O I：

10.1016/j.apsadv.2025.100705

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study investigated a combination of PbS quantum dots (QDs) and ZnO nanoparticles (NPs) layers in photodiodes for photodetection. Oxygen vacancies in ZnO NPs have been known to be recombination trap sites, hindering carrier transportation. We used various amines to passivate the oxygen vacancy of ZnO NPs. It is found that ethanolamine (EA) is the most effective in reducing the surface oxygen vacancies of ZnO, exhibiting a fivefold increase in electron mobility, enhancing PbS QD photodiode responsivity to 278.8 A/W and achieving an external quantum efficiency (EQE) of 36,700% under bias, and increasing the detectivity similar to 15.5 folds to 8.14 x 10(12) Jones compared with the pure ZnO device. This demonstrates the potential of amines as passivation agents to improve PbS photodiode performance with ZnO NPs as the electron transport layer (ETL).

引用

页数：9

共 50 条

[21] The role of surface passivation for efficient and photostable PbS quantum dot solar cells
Cao, Yiming
Stavrinadis, Alexandros
Lasanta, Tania
So, David
Konstantatos, Gerasimos
NATURE ENERGY, 2016, 1
[22] Responsivity improvement in PbS colloidal quantum dot photoconductors using colloidal gold nanoparticles
Heves, E.
Ozturk, C.
Gurbuz, Y.
ELECTRONICS LETTERS, 2013, 49 (05) : 367 - 368
[23] The role of surface passivation for efficient and photostable PbS quantum dot solar cells
Yiming Cao
Alexandros Stavrinadis
Tania Lasanta
David So
Gerasimos Konstantatos
Nature Energy, 1 (4)
[24] Theoretical Study on the Photocurrent of a ZnO-based Quantum Dot Photodetector
Li, M. K.
Lee, S. J.
Kang, T. W.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2009, 55 (01) : 120 - 123
[25] Enhanced photocurrent readout for a quantum dot qubit by bias modulation
Quilter, J. H.
Coles, R. J.
Ramsay, A. J.
Fox, A. M.
Skolnick, M. S.
APPLIED PHYSICS LETTERS, 2013, 102 (18)
[26] Enhanced normal incidence photocurrent in quantum dot infrared photodetectors
Shao, Jiayi
Vandervelde, Thomas E.
Barve, Ajit
Jang, Woo-Yong
Stintz, Andreas
Krishna, Sanjay
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2011, 29 (03):
[27] Enhanced solar photocurrent using a quantum-dot molecule
Lira, J.
Villas-Boas, J. M.
Sanz, L.
Alcalde, A. M.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2022, 39 (08) : 2047 - 2055
[28] Configuration adjustment of ZnO/PbS quantum dot heterojunction solar cells
Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education and Shanxi Province, National and Local Joint Engineering Research Center, Taiyuan University of Technology, Taiyuan, China
不详
不详
Rengong Jingti Xuebao, 6 (1509-1515):
[29] Optimization of a ZnO/PbS Depleted Heterojunction Quantum Dot Photovoltaic Cell
Philip, Matthew
Cowern, Nick
2014 INTERNATIONAL RENEWABLE AND SUSTAINABLE ENERGY CONFERENCE (IRSEC), 2014, : 32 - 36
[30] Photocarrier Radiometry Characteristics of PbS Colloidal Quantum Dot Films
Luo Donghui
Wang Qian
Zhao Zitao
LASER & OPTOELECTRONICS PROGRESS, 2024, 61 (09)

← 1 2 3 4 5 →