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Enhanced Performanc...
Enhanced Performance of p-Type Dye-Sensitized Solar Cells Based on Ultrasmall Mg-Doped CuCrO2 Nanocrystals
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Xiong, Dehua (författare)
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Zhang, Wenjun (författare)
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Zeng, Xianwei (författare)
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Xu, Zhen (författare)
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Chen, Wei (författare)
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Cui, Jin (författare)
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Wang, Mingkui (författare)
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- Sun, Licheng (författare)
- KTH,Organisk kemi
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Cheng, Yi-Bing (författare)
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(creator_code:org_t)
- 2013-06-21
- 2013
- Engelska.
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Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 6:8, s. 1432-1437
- 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
- Herein, we present ultrasmall delafossite-type Mg-doped CuCrO2 nanocrystals prepared by using hydrothermal synthesis and their first application as photocathodes in efficient p-type dye-sensitized solar cells. The short-circuit current density (J(sc)) is notably increased by approximately 27% owing to the decreased crystallite size and the enhanced optical transmittance associated with Mg doping of the CuCrO2 nanocrystalline sample. An open-circuit voltage (V-oc) of 201mV, J(sc) of 1.51mAcm(-2), fill factor of 0.449, and overall photoconversion efficiency of 0.132% have been achieved with the CuCr0.9Mg0.1O2 dye photocathode sensitized with the P1 dye under optimized conditions. This efficiency is nearly threetimes higher than that of the NiO-based reference device, which is attributed to the largely improved V-oc and J(sc). The augmentation of V-oc and J(sc) can be attributed to the lower valance band position and the faster hole diffusion coefficient of CuCr0.9Mg0.1O2 compared to those of the NiO reference, respectively, which leads to a higher hole collection efficiency.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- delaffosite oxides
- doping
- hydrothermal synthesis
- semiconductors
- solar cells
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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