Metal-organic-framework derived porous counter electrode for quantum dot-sensitized solar cells
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- 英文论文题名：Metal-organic-framework derived porous counter electrode for quantum dot-sensitized solar cells
- 论文作者：Wenjiao Xu ; Jingbo Zhang
- 英文论文作者：Wenjiao Xu ; Jingbo Zhang ; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry ; Ministry of Education ; Tianjin Key Laboratory of Structure and Performance for Functional Molecules ; College of Chemistry ; Tianjin Normal University
- 年：2017
- 作者机构：Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University;
- 英文论文关键词：ZIF-67 ; Vulcanization ; Counter electrodes ; QDSSCs
- 会议召开时间：2017-05-27
- 会议录名称：第四届新型太阳能电池学术研讨会论文集
- 英文会议录名称：Abstract Book of the 4th Conference on New Generation Solar Cells
- 语种：英文
- 分类号：TM914.4
- 学会代码：ZKYQ
- 会议名称：第四届新型太阳能电池学术研讨会
- 会议地点：中国北京
- 主办单位：中国可再生能源学会光化学专业委员会
- 学会名称：中国科学院物理研究所清洁能源实验室
- 页数：1
- 文件大小：516k
- 原文格式：D
- 会议级别：全国
摘要
Metal-organic-frameworks(MOFs) derived carbon materials have attracted particular attention in recent years as a new sort of porous conducting material because of their well-connected networks, tunable and versatile porosities~([1]).Herein, we report on a novel porous MOF-derived carbon framework as the counter electrode(CE) for CdSe quantum dot-sensitized solar cells(QDSSCs).A zeolitic-imidazole framework(ZIF) layer is prepared by printing ZIF-67 powders, followed by the careful carbonation in N_2.The vulcanized MOF were formed by sintering ZIF-67 under sulfur vapor at 450℃.CdSe quantum dots were deposited by the chemical bath deposition on TiO_2 nanocrystalline thin film further modified by the TiCl_4 treatment strategy as the working electrode~([2]).By comparing the photovoltaic performance of QDSSCs based on CE prepared by the vulcanization(S30), the carbonization(C15) and the vulcanization followed by carbonization(C15+S15) of ZIF-67, it can be concluded that the vulcanization of ZIF-67 for 30 min as CE shows the best performance(conversion efficiency of 3.77%), which is higher than that of the Pt CE one(2.98%) as shown in Fig.1a.The enhancement reason was attributed to its higher catalytic properties towards polysulfide solution(as shown in Fig.1b) and a high BET specific surface area(1018 m~2·g~(-1)).
Metal-organic-frameworks(MOFs) derived carbon materials have attracted particular attention in recent years as a new sort of porous conducting material because of their well-connected networks, tunable and versatile porosities~([1]).Herein, we report on a novel porous MOF-derived carbon framework as the counter electrode(CE) for CdSe quantum dot-sensitized solar cells(QDSSCs).A zeolitic-imidazole framework(ZIF) layer is prepared by printing ZIF-67 powders, followed by the careful carbonation in N_2.The vulcanized MOF were formed by sintering ZIF-67 under sulfur vapor at 450℃.CdSe quantum dots were deposited by the chemical bath deposition on TiO_2 nanocrystalline thin film further modified by the TiCl_4 treatment strategy as the working electrode~([2]).By comparing the photovoltaic performance of QDSSCs based on CE prepared by the vulcanization(S30), the carbonization(C15) and the vulcanization followed by carbonization(C15+S15) of ZIF-67, it can be concluded that the vulcanization of ZIF-67 for 30 min as CE shows the best performance(conversion efficiency of 3.77%), which is higher than that of the Pt CE one(2.98%) as shown in Fig.1a.The enhancement reason was attributed to its higher catalytic properties towards polysulfide solution(as shown in Fig.1b) and a high BET specific surface area(1018 m~2·g~(-1)).
Metal-organic-frameworks(MOFs) derived carbon materials have attracted particular attention in recent years as a new sort of porous conducting material because of their well-connected networks, tunable and versatile porosities~([1]).Herein, we report on a novel porous MOF-derived carbon framework as the counter electrode(CE) for CdSe quantum dot-sensitized solar cells(QDSSCs).A zeolitic-imidazole framework(ZIF) layer is prepared by printing ZIF-67 powders, followed by the careful carbonation in N_2.The vulcanized MOF were formed by sintering ZIF-67 under sulfur vapor at 450℃.CdSe quantum dots were deposited by the chemical bath deposition on TiO_2 nanocrystalline thin film further modified by the TiCl_4 treatment strategy as the working electrode~([2]).By comparing the photovoltaic performance of QDSSCs based on CE prepared by the vulcanization(S30), the carbonization(C15) and the vulcanization followed by carbonization(C15+S15) of ZIF-67, it can be concluded that the vulcanization of ZIF-67 for 30 min as CE shows the best performance(conversion efficiency of 3.77%), which is higher than that of the Pt CE one(2.98%) as shown in Fig.1a.The enhancement reason was attributed to its higher catalytic properties towards polysulfide solution(as shown in Fig.1b) and a high BET specific surface area(1018 m~2·g~(-1)).
引文
[1]R.Wu,X.K.Qian,X.H.Rui,H.Liu,B.Yadian,K.Zhou,J.Wei,Q.Y.Yan,X.Q.Feng,Y.Long,L.Y.Wang and Y.Z.Huang,Small,2014,10,1932.
[2]F.Y.Zhao,G.S.Tang,J.B.Zhang,Y.Lin,Electrochim.Acta,2012,62,396.
[2]F.Y.Zhao,G.S.Tang,J.B.Zhang,Y.Lin,Electrochim.Acta,2012,62,396.