Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells

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	Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells
其他题名	Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells
	Lu Wang 1; Zhipeng Huo1 ; Li Tao 2; Jun Zhu 1; Shuanghong Chen1 ; Xu Pan1 ; Songyuan Dai 1
	2016
发表期刊	Science China. Materials
ISSN	2095-8226
摘要	A low molecular mass organogelator (LMOG), N,N′ -1,5-pentanediylbis-dodecanamide, was applied to quasi-solid-state dye-sensitized solar cells (QS-DSSCs). The crosslinked gel network was self-assemblied by the LOMG in the liquid electrolyte, and the in situ assembly process of gelator can be obtained by the polarized optical microscopy (POM). On one hand, the network hinders the diffusion of redox species and accelerates the electron recombination at the interface of the TiO_2 photoanode/electrolyte. On the other hand, Li~+ can interact with the amide carbonyl groups of the gelators and the adsorption of Li~+ onto the TiO_2 surface decreases, leading to a negative shift of the TiO_2 conduction band edge, accelerated electron transport and decreased electron injection efficiency (η_(inj)) of QS-DSSC. As a result, the incidental photon-to-electron conversion efficiency (IPCE), the short circuit photocurrent density (J_(sc)) and the open circuit voltage (V_(oc)) of the QS-DSSC are decreased compared with those of the liquid electrolyte based DSSC (L-DSSC), which indicates that the electron recombination plays a great role in the photovoltaic performances of DSSC. Remarkably, the QS-DSSC exhibits excellent thermal and light-soaking stabilities during accelerated aging tests for 1000 h, which is attributed to a great intrinsic stability of the gel electrolyte with a high gel to solution transition temperature (T_(gel)=108℃).
其他摘要	A low molecular mass organogelator (LMOG), N,N′ -1,5-pentanediylbis-dodecanamide, was applied to quasi-solid-state dye-sensitized solar cells (QS-DSSCs). The crosslinked gel network was self-assemblied by the LOMG in the liquid electrolyte, and the in situ assembly process of gelator can be obtained by the polarized optical microscopy (POM). On one hand, the network hinders the diffusion of redox species and accelerates the electron recombination at the interface of the TiO_2 photoanode/electrolyte. On the other hand, Li~+ can interact with the amide carbonyl groups of the gelators and the adsorption of Li~+ onto the TiO_2 surface decreases, leading to a negative shift of the TiO_2 conduction band edge, accelerated electron transport and decreased electron injection efficiency (η_(inj)) of QS-DSSC. As a result, the incidental photon-to-electron conversion efficiency (IPCE), the short circuit photocurrent density (J_(sc)) and the open circuit voltage (V_(oc)) of the QS-DSSC are decreased compared with those of the liquid electrolyte based DSSC (L-DSSC), which indicates that the electron recombination plays a great role in the photovoltaic performances of DSSC. Remarkably, the QS-DSSC exhibits excellent thermal and light-soaking stabilities during accelerated aging tests for 1000 h, which is attributed to a great intrinsic stability of the gel electrolyte with a high gel to solution transition temperature (T_(gel)=108℃).
关键词	dye-sensitized solar cells quasi-solid-state low molecular mass organogelator electron kinetics stability
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:5846173
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/97484
专题	中国科学院合肥物质科学研究院
作者单位	1.Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences 2.Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences 3.Faculty of Physics and Electronic Science, Hubei University 4.Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences 5.Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences 6.Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences 7.Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Lu Wang,Zhipeng Huo,Li Tao,et al. Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells[J]. Science China. Materials,2016,59.
APA	Lu Wang.,Zhipeng Huo.,Li Tao.,Jun Zhu.,Shuanghong Chen.,...&Songyuan Dai.(2016).Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells.Science China. Materials,59.
MLA	Lu Wang,et al."Effect of the self-assembled gel network formed from a low molecular mass organogelator on the electron kinetics in quasi-solid-state dye-sensitized solar cells".Science China. Materials 59(2016).