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Reducing Energy Los...
Reducing Energy Loss and Morphology Optimization Manipulated by Molecular Geometry Engineering for Hetero-junction Organic Solar Cells
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- Xu, Guodong (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Nanchang Univ, Peoples R China
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- Rao, Huan (författare)
- Nanchang Univ, Peoples R China
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- Liao, Xunfan (författare)
- Jiangxi Normal Univ, Peoples R China
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- Zhang, Youdi (författare)
- Nanchang Univ, Peoples R China
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- Wang, Yuming (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Xing, Zhi (författare)
- Nanchang Univ, Peoples R China
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- Hu, Ting (författare)
- Nanchang Univ, Peoples R China
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- Tan, Licheng (författare)
- Nanchang Univ, Peoples R China
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- Chen, Lie (författare)
- Nanchang Univ, Peoples R China
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- Chen, Yiwang (författare)
- Nanchang Univ, Peoples R China
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(creator_code:org_t)
- 2020-09-24
- 2020
- Engelska.
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Ingår i: Chinese journal of chemistry. - : WILEY-V C H VERLAG GMBH. - 1001-604X .- 1614-7065. ; 38:12, s. 1553-1559
- 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
- A Summary of main observation and conclusion Molecular geometry engineering is an effective strategy to control the micromorphology and molecular energy level in organic photovoltaics (OPVs). Two novel copolymers based on alkylsilyl- and chloride-functionalized benzodithiophene (BDT) were designed and synthesized for wide bandgap copolymer donor materials in OPVs. It was found that the two copolymers exhibited distinctly different properties in active layer when blended with fullerene-free acceptor IT-4F. The chloride-functionalized copolymer PBDTCl-TZ with deeper molecular energy level and better coplanar structure induced more ordered aggregation in blend film. Thus, the device based on PBDTCl-TZ exhibits better energy alignment with IT-4F and smaller radiative recombination. Furthermore, the non-radiative recombination of PBDTCl-TZ:IT-4F based device is about 45 mV lower than the PBDTSi-TZ:IT-4F based device, contributing to a lower energy loss (E-loss), and a higher open-circut voltage (V-OC). As a result, the devices based on the blend of PBDTCl-TZ:IT-4F exhibit a high power conversion efficiency (PCE) of up to 12.2% with a highV(OC)of 0.837 V, higher than that of PBDTSi-TZ:IT-4F, of which the PCE is 11.2% with a V-OC of 0.781 V.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Energy conversion; Aggregation; Donor-acceptor systems; Electron transfer; Micromorphology; Energy loss
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Xu, Guodong
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Rao, Huan
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Liao, Xunfan
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Zhang, Youdi
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Wang, Yuming
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Xing, Zhi
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visa fler...
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Hu, Ting
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Tan, Licheng
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Chen, Lie
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Chen, Yiwang
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Den kondenserade ...
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Chinese journal ...
- Av lärosätet
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Linköpings universitet