柔性染料敏化太阳电池光阳极的优化及叠层电池的初步研究

doi:10.3724/SP.J.1077.2013.12386

无机材料学报 ›› 2013, Vol. 28 ›› Issue (5): 527-531.DOI: 10.3724/SP.J.1077.2013.12386 CSTR: 32189.14.SP.J.1077.2013.12386

柔性染料敏化太阳电池光阳极的优化及叠层电池的初步研究

刘凤娟¹, 邵景珍^1,2, 董伟伟^1,2, 邓赞红^1,2, 王时茂¹, 方晓东^1,2

(1. 中国科学院安徽光学精密机械研究所, 安徽省光子器件与材料重点实验室, 合肥230031; 2. 中国科学院新型薄膜太阳电池重点实验室, 合肥 230031)

收稿日期:2012-06-18 修回日期:2012-08-21 出版日期:2013-05-10 网络出版日期:2013-04-22
作者简介:刘凤娟(1986–), 女, 博士研究生. E-mail: lfjuan_2006@126.com
基金资助:
国家自然科学基金(51172237);国家重点基础研究发展计划(2011CBA00700);国家高技术研究发展计划(2011AA050527)

Optimization of Photoelectrode for Flexible Dye-sensitized Solar Cell and Preliminary Study of Tandem Cell

LIU Feng-Juan¹, SHAO Jing-Zhen^{1, 2}, DONG Wei-Wei^{1, 2}, DENG Zan-Hong^{1, 2}, WANG Shi-Mao¹, FANG Xiao-Dong^{1, 2}

(1. Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2 Key Lab of New Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, China)

Received:2012-06-18 Revised:2012-08-21 Published:2013-05-10 Online:2013-04-22
About author:LIU Feng-Juan. E-mail: lfjuan_2006@126.com
Supported by:
National Natural Science Foundation of China (51172237);973 Program (2011CBA00700);863 Program (2011AA050527)

摘要/Abstract

摘要：

在前期对冷等静压制备柔性染料敏化太阳电池(DSC)研究的基础上, 开展了浆料的优化及叠层DSC的研究。首先利用水热法处理由小颗粒P25调配的浆料, 发现处理后浆料的稳定性及DSC的效率得到了大幅提高。在P25浆料中加入不同比例200 nm TiO₂大颗粒提高光散射, 当P25与200 nm TiO₂比例为4:1时, DSC获得最高光电转换效率3.11%。在此基础上, 尝试用N719和N749双层染料敏化, 发现双层染料敏化后电池的效率介于N719和N749单独敏化的电池效率, 这可能是由于光阳极变厚不利于电子传输以及染料相互接触影响染料纯度, 光阳极厚度及电池结构有待于进一步优化。

关键词: 柔性染料敏化太阳电池, 冷等静压, 水热, 浆料优化, 叠层

Abstract:

Based on the preparation of flexible dye-sensitized solar cells (DSC) by cold isostatic pressing method, optimization of the paste and tandem DSC were investigated. The results presented that hydrothermal treatment of P25 paste could improve the stability of the paste and the efficiency of DSC obviously. Proper amount of 200 nm TiO₂particles was added to the P25 paste to enhance light scattering of photoelectrode. The highest conversion efficiency of 3.11% was obtained at the 4:1 ratio of P25 to 200 nm TiO₂. Subsequently, N719 and N749 double-layer tandem DSC were studied. The results show that the efficiency of the double-layer tandem DSC is higher than that of N749 totally sensitized DSC but lower than that of N719 totally sensitized DSC. This may be caused by that thicker photoelectrode hampers the electronic transmission and dyes contact impacts the purity of dyes. The thickness of photoelectrode and cell structure need to be optimized.

Key words: flexible DSC, cold isostatic pressing, hydrothermal, paste optimization, tandem

中图分类号:

TM914

刘凤娟, 邵景珍, 董伟伟, 邓赞红, 王时茂, 方晓东. 柔性染料敏化太阳电池光阳极的优化及叠层电池的初步研究[J]. 无机材料学报, 2013, 28(5): 527-531.

LIU Feng-Juan, SHAO Jing-Zhen, DONG Wei-Wei, DENG Zan-Hong, WANG Shi-Mao, FANG Xiao-Dong. Optimization of Photoelectrode for Flexible Dye-sensitized Solar Cell and Preliminary Study of Tandem Cell[J]. Journal of Inorganic Materials, 2013, 28(5): 527-531.

图/表 8

Table 1 Photovoltaic performance of cells made from TiO2 paste without hydrothermal treatment (PasteⅠ) and with hydrothermal treatment (PasteⅡ)

Paste	V_oc/V	J_sc/(mA·cm^-2)	FF	η /%
PasteⅠ	0.68	4.16	0.57	1.64
PasteⅡ	0.70	7.26	0.55	2.84

图1 P25和200nmTiO2颗粒的XRD图谱

Fig. 1 XRD patterns of P25 and 200 nm TiO2 particles

图2 不同浆料制备电池的光电性能变化情况

Fig. 2 Changes of photovoltaic performance of DSC based on different pastes

图3 (a) 1:0和(b) 6:1浆料制备的TiO2薄膜经冷等静压 300 MPa后的SEM照片

Fig. 3 SEM image of TiO2 film after 300 MPa cold isostatic pressing of (a) 1:0 and (b) 6:1 pastes

图4 不同浆料制备电池的IPCE图谱

Fig. 4 IPCE spectra of DSC based on different pastes

图5 双层染料敏化的叠层DSC结构示意图

Fig. 5 Schematic diagram of DSC with dye-bilayer structure

图6 N719、N749、N719和N749双层染料敏化电池的I-V曲线表2 N719、N749、N719和N749双层染料敏化电池的光电性能参数

Fig. 6 I-V curve of cells sensitized by N719, N749, N719 and N749

Table 2 Particular parameters of photovoltaic performance of cells sensitized by N719, N749, N719 and N749

Dye	V_oc/V	J_sc/(mA·cm^-2)	FF	η/%
N719	0.72	8.08	0.53	3.11
N749	0.67	4.08	0.53	1.46
N719+N749	0.66	5.20	0.54	1.89

参考文献 21

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柔性染料敏化太阳电池光阳极的优化及叠层电池的初步研究

Optimization of Photoelectrode for Flexible Dye-sensitized Solar Cell and Preliminary Study of Tandem Cell

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