Effect of TiO^sub 2^ modification on urchin-like orthorhombic Nb^sub 2^O^sub 5^ nanospheres as photoelectrodes in dye-sensitized solar cells
TiO2 modification via TiCl4 treatment has been widely used to improve the power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs), in which the effects usually attribute to the inhibition of charge recombination by barrier effect. Niobium pentoxide (Nb2O5) is considered a promising p...
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| Veröffentlicht in: | Solar energy 2017-09, Vol.153, p.584 |
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| creator | Chu, Liang Liu, Wei Yu, Aiai Qin, Zhengfei Hu, Ruiyuan Shu, Huazhong Luo, Qiu-Ping Min, Yonggang Yang, Jianping Li, Xing'ao |
| description | TiO2 modification via TiCl4 treatment has been widely used to improve the power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs), in which the effects usually attribute to the inhibition of charge recombination by barrier effect. Niobium pentoxide (Nb2O5) is considered a promising photoelectrode material for DSSCs. Here we prepared urchin-like orthorhombic Nb2O5 nanospheres consisting of ultrathin nanorods by a hydrothermal method, which were further developed as photoelectrodes for DSSCs. The TiO2 modification on the urchin-like orthorhombic Nb2O5 nanospheres increases the photocurrent and PCE of the DSSCs. However, the impedance spectroscopy showed that charge recombination was not reduced by the TiO2 modification. The improvement in the photocurrent and PCE has been attributed to the enhanced absorption of dye molecules (N719). The results indicate that the enhancement of dye absorption for orthorhombic Nb2O5 photoelectrodes is the desirable approach to improve the performance of orthorhombic Nb2O5-based DSSCs. |
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Niobium pentoxide (Nb2O5) is considered a promising photoelectrode material for DSSCs. Here we prepared urchin-like orthorhombic Nb2O5 nanospheres consisting of ultrathin nanorods by a hydrothermal method, which were further developed as photoelectrodes for DSSCs. The TiO2 modification on the urchin-like orthorhombic Nb2O5 nanospheres increases the photocurrent and PCE of the DSSCs. However, the impedance spectroscopy showed that charge recombination was not reduced by the TiO2 modification. The improvement in the photocurrent and PCE has been attributed to the enhanced absorption of dye molecules (N719). The results indicate that the enhancement of dye absorption for orthorhombic Nb2O5 photoelectrodes is the desirable approach to improve the performance of orthorhombic Nb2O5-based DSSCs.</description><identifier>ISSN: 0038-092X</identifier><identifier>EISSN: 1471-1257</identifier><language>eng</language><publisher>New York: Pergamon Press Inc</publisher><subject>Absorption ; Dye-sensitized solar cells ; Dyes ; Energy conversion efficiency ; Modifications ; Nanorods ; Nanospheres ; Niobium ; Niobium oxides ; Performance enhancement ; Photoelectric effect ; Photoelectric emission ; Photovoltaic cells ; Recombination ; Solar cells ; Solar energy ; Spectroscopy ; Spectrum analysis ; Studies ; Titanium dioxide</subject><ispartof>Solar energy, 2017-09, Vol.153, p.584</ispartof><rights>Copyright Pergamon Press Inc. 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Niobium pentoxide (Nb2O5) is considered a promising photoelectrode material for DSSCs. Here we prepared urchin-like orthorhombic Nb2O5 nanospheres consisting of ultrathin nanorods by a hydrothermal method, which were further developed as photoelectrodes for DSSCs. The TiO2 modification on the urchin-like orthorhombic Nb2O5 nanospheres increases the photocurrent and PCE of the DSSCs. However, the impedance spectroscopy showed that charge recombination was not reduced by the TiO2 modification. The improvement in the photocurrent and PCE has been attributed to the enhanced absorption of dye molecules (N719). The results indicate that the enhancement of dye absorption for orthorhombic Nb2O5 photoelectrodes is the desirable approach to improve the performance of orthorhombic Nb2O5-based DSSCs.</description><subject>Absorption</subject><subject>Dye-sensitized solar cells</subject><subject>Dyes</subject><subject>Energy conversion efficiency</subject><subject>Modifications</subject><subject>Nanorods</subject><subject>Nanospheres</subject><subject>Niobium</subject><subject>Niobium oxides</subject><subject>Performance enhancement</subject><subject>Photoelectric effect</subject><subject>Photoelectric emission</subject><subject>Photovoltaic cells</subject><subject>Recombination</subject><subject>Solar cells</subject><subject>Solar energy</subject><subject>Spectroscopy</subject><subject>Spectrum analysis</subject><subject>Studies</subject><subject>Titanium dioxide</subject><issn>0038-092X</issn><issn>1471-1257</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqNjUFLxDAUhIO4YF39Dw88F5Kuu2nPsuJJL3vw1CVNX0jWbF7NSw_6G_zRFtwfIAwMzMzHXIlKPWpVq2arr0Ul5aatZde834hb5pOUSqtWV-Jn7xzaAuTgEN56ngdoejjTGFywpgRKsGjO1odUx_CBQLl4yp7OQ7DwOlyQP3TbQzKJePKYkcEwTJ4KYVwuMo1LFBKMX1gzJg4lfOMITNFksBgj34mVM5Hx_uJr8fC8Pzy91FOmzxm5HE8057RUR9XtlO5k26nN_1a_iYZWmQ</recordid><startdate>20170901</startdate><enddate>20170901</enddate><creator>Chu, Liang</creator><creator>Liu, Wei</creator><creator>Yu, Aiai</creator><creator>Qin, Zhengfei</creator><creator>Hu, Ruiyuan</creator><creator>Shu, Huazhong</creator><creator>Luo, Qiu-Ping</creator><creator>Min, Yonggang</creator><creator>Yang, Jianping</creator><creator>Li, Xing'ao</creator><general>Pergamon Press Inc</general><scope>7SP</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20170901</creationdate><title>Effect of TiO^sub 2^ modification on urchin-like orthorhombic Nb^sub 2^O^sub 5^ nanospheres as photoelectrodes in dye-sensitized solar cells</title><author>Chu, Liang ; Liu, Wei ; Yu, Aiai ; Qin, Zhengfei ; Hu, Ruiyuan ; Shu, Huazhong ; Luo, Qiu-Ping ; Min, Yonggang ; Yang, Jianping ; Li, Xing'ao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_19617908913</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Absorption</topic><topic>Dye-sensitized solar cells</topic><topic>Dyes</topic><topic>Energy conversion efficiency</topic><topic>Modifications</topic><topic>Nanorods</topic><topic>Nanospheres</topic><topic>Niobium</topic><topic>Niobium oxides</topic><topic>Performance enhancement</topic><topic>Photoelectric effect</topic><topic>Photoelectric emission</topic><topic>Photovoltaic cells</topic><topic>Recombination</topic><topic>Solar cells</topic><topic>Solar energy</topic><topic>Spectroscopy</topic><topic>Spectrum analysis</topic><topic>Studies</topic><topic>Titanium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chu, Liang</creatorcontrib><creatorcontrib>Liu, Wei</creatorcontrib><creatorcontrib>Yu, Aiai</creatorcontrib><creatorcontrib>Qin, Zhengfei</creatorcontrib><creatorcontrib>Hu, Ruiyuan</creatorcontrib><creatorcontrib>Shu, Huazhong</creatorcontrib><creatorcontrib>Luo, Qiu-Ping</creatorcontrib><creatorcontrib>Min, Yonggang</creatorcontrib><creatorcontrib>Yang, Jianping</creatorcontrib><creatorcontrib>Li, Xing'ao</creatorcontrib><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Solar energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chu, Liang</au><au>Liu, Wei</au><au>Yu, Aiai</au><au>Qin, Zhengfei</au><au>Hu, Ruiyuan</au><au>Shu, Huazhong</au><au>Luo, Qiu-Ping</au><au>Min, Yonggang</au><au>Yang, Jianping</au><au>Li, Xing'ao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of TiO^sub 2^ modification on urchin-like orthorhombic Nb^sub 2^O^sub 5^ nanospheres as photoelectrodes in dye-sensitized solar cells</atitle><jtitle>Solar energy</jtitle><date>2017-09-01</date><risdate>2017</risdate><volume>153</volume><spage>584</spage><pages>584-</pages><issn>0038-092X</issn><eissn>1471-1257</eissn><abstract>TiO2 modification via TiCl4 treatment has been widely used to improve the power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs), in which the effects usually attribute to the inhibition of charge recombination by barrier effect. Niobium pentoxide (Nb2O5) is considered a promising photoelectrode material for DSSCs. Here we prepared urchin-like orthorhombic Nb2O5 nanospheres consisting of ultrathin nanorods by a hydrothermal method, which were further developed as photoelectrodes for DSSCs. The TiO2 modification on the urchin-like orthorhombic Nb2O5 nanospheres increases the photocurrent and PCE of the DSSCs. However, the impedance spectroscopy showed that charge recombination was not reduced by the TiO2 modification. The improvement in the photocurrent and PCE has been attributed to the enhanced absorption of dye molecules (N719). The results indicate that the enhancement of dye absorption for orthorhombic Nb2O5 photoelectrodes is the desirable approach to improve the performance of orthorhombic Nb2O5-based DSSCs.</abstract><cop>New York</cop><pub>Pergamon Press Inc</pub></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Absorption Dye-sensitized solar cells Dyes Energy conversion efficiency Modifications Nanorods Nanospheres Niobium Niobium oxides Performance enhancement Photoelectric effect Photoelectric emission Photovoltaic cells Recombination Solar cells Solar energy Spectroscopy Spectrum analysis Studies Titanium dioxide |
| title | Effect of TiO^sub 2^ modification on urchin-like orthorhombic Nb^sub 2^O^sub 5^ nanospheres as photoelectrodes in dye-sensitized solar cells |
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