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A novel phenoxazine...
A novel phenoxazine-based hole transport material for efficient perovskite solar cell
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- Cheng, Ming (författare)
- KTH,Organisk kemi
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- Chen, Cheng (författare)
- KTH,Tillämpad fysikalisk kemi
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- Xu, Bo (författare)
- KTH,Organisk kemi
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- Hua, Yong (författare)
- KTH,Organisk kemi
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Zhang, Fuguo (författare)
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- Kloo, Lars (författare)
- KTH,Tillämpad fysikalisk kemi
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- Sun, Licheng (författare)
- KTH,Organisk kemi,Dalian University of Technology (DUT), China
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(creator_code:org_t)
- Elsevier, 2015
- 2015
- Engelska.
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Ingår i: Journal of Energy Challenges and Mechanics. - : Elsevier. - 2056-9386. ; 24:6, s. 698-706
- 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
- Based on the previous research work in our laboratory, we have designed and synthesized a small-molecule, hole transport material (HTM) POZ6-2 using phenoxazine (POZ) as central unit and dicyanovinyl units as electron-withdrawing terminal groups. Through the introduction of a 2-ethyl-hexyl bulky chain into the POZ core unit, POZ6-2 exhibits good solubility in organic solvents. In addition, POZ6-2 possesses appropriate energy levels in combination with a high hole mobility and conductivity in its pristine form. Therefore, it can readily be used as a dopant-free HTM in perovskite solar cells (PSCs) and a conversion efficiency of 10.3% was obtained. The conductivity of the POZ6-2 layer can be markedly enhanced via doping in combination with typical additives, such as 4-tert-butylpyridine (TBP) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI). Correspondingly, the efficiency of the PSCs was further improved to 12.3% using doping strategies. Under the same conditions, reference devices based on the well-known HTM Spiro-OMeTAD show an efficiency of 12.8%.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Dopant-free
- Perovskite solar cell
- Hole transport material
- Phenoxazine
- Thin film
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- art (ämneskategori)
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