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Strong Coupling of ...
Strong Coupling of Colloidal Quantum Dots via Self-Assemble Passivation for Efficient Infrared Solar Cells
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- Zheng, Siyu (författare)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
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- Wang, Yunfei (författare)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
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- Jia, Donglin (författare)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
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- Tian, Lei (författare)
- Uppsala universitet,Fysikalisk kemi
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- Chen, Jingxuan (författare)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
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- Shan, Lianwei (författare)
- Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150040, Peoples R China.
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- Dong, Limin (författare)
- Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150040, Peoples R China.
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- Zhang, Xiaoliang (författare)
- Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
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Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China Fysikalisk kemi (creator_code:org_t)
- 2021-06-13
- 2021
- Engelska.
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Ingår i: Advanced Materials Interfaces. - : John Wiley & Sons. - 2196-7350. ; 8:13
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The surface passivation of colloidal quantum dots (CQD) is critical for the electronic coupling of CQDs, which significantly affects the photovoltaic performance of CQD solar cells (CQDSCs). Herein, a self-assemble passivation (SAP) strategy of CQDs is introduced to improve CQD coupling. The PbI2 passivation layer prepared using the SAP method can largely improve surface defect passivation of CQDs, diminishing charge recombination induced by the sub-bandgap traps. Meanwhile, extensive theoretical simulations reveal that the self-assembled PbI2 passivation layer works as a "charger bridge" for charge transport between the adjacent CQDs, avoiding CQD fusion. The infrared CQDSCs are fabricated and the SAP-based CQDSC yields an efficiency of up to 12.3%, which is significantly improved compared with that of the conventional CQDSCs with iodide passivating CQD surface. The improved photovoltaic performance in the SAP-based CQDSCs is attributed to increased charge extraction, resulting from strong CQD coupling within the CQD solid films. This work provides a simple and facile way to improve the electronic coupling of CQDs for high-performance infrared CQDSCs.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- charge transport
- colloidal quantum dots
- infrared solar cells
- photovoltaic performance
- surface passivation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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