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The Effect of Oxyge...
The Effect of Oxygen Uptake on Charge Injection Barriers in Conjugated Polymer Films
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- Bao, Qinye (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska fakulteten,East China Normal Univ, Peoples R China; Soochow Univ, Peoples R China
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- Liu, Xianjie (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska fakulteten
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- Braun, Slawomir (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska fakulteten
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- Yang, Jianming (författare)
- East China Normal Univ, Peoples R China
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- Li, Yanqing (författare)
- Soochow Univ, Peoples R China
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- Tang, Jianxin (författare)
- Soochow Univ, Peoples R China
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- Duan, Chungang (författare)
- East China Normal Univ, Peoples R China
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- Fahlman, Mats (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska fakulteten
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(creator_code:org_t)
- 2018-02-07
- 2018
- Engelska.
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Ingår i: ACS Applied Materials and Interfaces. - : AMER CHEMICAL SOC. - 1944-8244 .- 1944-8252. ; 10:7, s. 6491-6497
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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http://liu.diva-port...
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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 energy offset between the electrode Fermi level and organic semiconductor transport levels is a key parameter controlling the charge injection barrier and hence efficiency of organic electronic devices. Here, we systematically explore the effect of in situ oxygen exposure on energetics in n-type conjugated polymer P(NDI2OD-T2) films. The analysis reveals that an interfacial potential step is introduced for a series of P(NDI2OD-T2) electrode contacts, causing a nearly constant downshift of the vacuum level, while the ionization energies versus vacuum level remain constant. These findings are attributed to the establishment of a so-called double-dipole step via motion of charged molecules and will modify the charge injection barriers at electrode contact. We further demonstrate that the same behavior occurs when oxygen interacts with p-type polymer TQ1 films, indicating it is possible to be a universal effect for organic semiconductOrs.
Ämnesord
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- charge injection; barrier; spectroscopy; conjugated polymer; organic electronics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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