NDLI: Remarkable photocurrent of p-type dye-sensitized solar cell achieved by size controlled CuGaO<sub>2</sub> nanoplates

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Back cover

Journal of Materials Chemistry A Vol - 2 Issue - 8

Journal of Materials Chemistry A Vol - 2 Issue - 7

Journal of Materials Chemistry A Vol - 2 Issue - 6

Journal of Materials Chemistry A Vol - 2 Issue - 5

Journal of Materials Chemistry A Vol -1

Remarkable photocurrent of p-type dye-sensitized solar cell achieved by size controlled CuGaO₂ nanoplates

Content Provider	Royal Society of Chemistry (RSC)
Author	Powar, Satvasheel Xu, Zhen Zhang, Wenjun Wang, Mingkui Wang, Huan Chen, Wei Xu, Xiaobao Ming, Liqun Cui, Jin Cheng, Yi-Bing Xiong, Dehua Zeng, Xianwei Bach, Udo
Copyright Year	2014
Abstract	In this paper, we report the successful hydrothermal synthesis of CuGaO2 nanoplates with a critically small size and deposition methods to fabricate effective p-type semiconductive photocathodes in dye-sensitized solar cells (DSCs). Based on an efficient P1 dye and an iodide electrolyte, the optimal CuGaO2 photocathode has achieved remarkably high photocurrent density, up to 2.05 mA cm−2. To the best of our knowledge, this is the highest achieved by nanocrystalline p-type semiconductors besides NiO. The light harvesting, charge collection in CuGaO2 and NiO based DSCs have been compared. Owing to size control of the CuGaO2 nanoplates and subsequent mechanical pressing for photocathode film deposition, the light harvesting efficiency of the CuGaO2 photocathode is greatly increased to a comparable level to that of the NiO reference. Another noteworthy feature is the remarkably high charge collection efficiency of the CuGaO2 photocathode, which should benefit from the nature of delafossite oxides with a high conductivity leading to a much higher hole diffusion coefficient in the DSC system. The open-circuit voltage is 199.3 mV, about twice as high as that of the NiO reference, benefiting from the valence band position shifting from −5.15 eV for NiO to −5.29 eV for CuGaO2versus the vacuum level.
Starting Page	2968
Ending Page	2976
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	2
Issue Number	9
Journal	Journal of Materials Chemistry A
DOI	10.1039/c3ta14072e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	DSC Hydrothermal synthesis Extrinsic semiconductor Dye-sensitized solar cell Dye Iodine Electrolyte Photocathode Photocurrent Diffusion Electronic stability control Valence and conduction bands Electronvolt
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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