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Highly Stabilized Q...
Highly Stabilized Quantum Dot Ink for Efficient Infrared Light Absorbing Solar Cells
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- Jia, Donglin (author)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
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- Chen, Jingxuan (author)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
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- Zheng, Siyu (author)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
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- Phuyal, Dibya (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Yu, Mei (author)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
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- Tian, Lei (author)
- Uppsala universitet,Fysikalisk kemi
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- Liu, Jianhua (author)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
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- Karis, Olof (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Rensmo, Håkan (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Johansson, Erik M. J. (author)
- Uppsala universitet,Fysikalisk kemi
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- Zhang, Xiaoliang (author)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
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(creator_code:org_t)
- 2019-10-17
- 2019
- English.
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In: Advanced Energy Materials. - : WILEY-V C H VERLAG GMBH. - 1614-6832 .- 1614-6840. ; 9:44
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Liquid-state ligand exchange provides an efficient approach to passivate a quantum dot (QD) surface with small binding species and achieve a QD ink toward scalable QD solar cell (QDSC) production. Herein, experimental studies and theoretical simulations are combined to establish the physical principles of QD surface properties induced charge carrier recombination and collection in QDSCs. Ammonium iodide (AI) is used to thoroughly replace the native oleic acid ligand on the PbS QD surface forming a concentrated QD ink, which has high stability of more than 30 d. The ink can be directly applied for the preparation of a thick QD solid film using a single deposition step method and the QD solid film shows better characteristics compared with that of the film prepared with the traditional PbX2 (X = I or Br) post-treated QD ink. Infrared light-absorbing QDSC devices are fabricated using the PbS-AI QD ink and the devices give a higher photovoltaic performance compared with the devices fabricated with the traditional PbS-PbX2 QD ink. The improved photovoltaic performance in PbS-AI-based QDSC is attributed to diminished charge carrier recombination induced by the sub-bandgap traps in QDs. A theoretical simulation is carried out to atomically link the relationship of QDSC device function with the QD surface properties.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- charge recombination
- ligand exchange
- quantum dots
- solar cells
- theoretical simulations
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Jia, Donglin
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Chen, Jingxuan
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Zheng, Siyu
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Phuyal, Dibya
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Yu, Mei
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Tian, Lei
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show more...
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Liu, Jianhua
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Karis, Olof
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Rensmo, Håkan
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Johansson, Erik ...
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Zhang, Xiaoliang
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
- Articles in the publication
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Advanced Energy ...
- By the university
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Uppsala University