基于ZnO纳米片多级结构的柔性染料敏化太阳能电池的制备

doi:10.15541/jim20170325

无机材料学报 ›› 2018, Vol. 33 ›› Issue (5): 507-514.DOI: 10.15541/jim20170325

所属专题：光伏材料

基于ZnO纳米片多级结构的柔性染料敏化太阳能电池的制备

程厚燕¹, 罗俊¹, 黄丽群¹, 李家科¹, 杨志胜¹, 郭平春¹, 王艳香¹, 张琦锋²

1. 景德镇陶瓷大学材料科学与工程学院, 景德镇 333403;
2. 美国北达科他州立大学电子和计算机工程系, 法戈市 58108, 美国

收稿日期:2017-07-04 修回日期:2017-08-23 出版日期:2018-05-20 网络出版日期:2018-04-26
作者简介:程厚燕(1992-), 男, 硕士研究生. E-mail: chyzxhy123@163.com
基金资助:
国际科技合作专项(2013DFA51000);国家自然科学基金 (51462015);江西省科技厅项目(20122BDH80003)

Preparation of Flexible Dye-sensitized Solar Cells Based on Hierarchical Structure ZnO Nanosheets

CHENG Hou-Yan¹, LUO Jun¹, HUANG Li-Qun¹, LI Jia-Ke¹, YANG Zhi-Sheng¹, GUO Ping-Chun¹, WANG Yan-Xiang¹, ZHANG Qi-Feng²

1. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;
2. Department of Electrical and Computer Engineering, North Dakota State University, Fargo 58108, USA

Received:2017-07-04 Revised:2017-08-23 Published:2018-05-20 Online:2018-04-26
About author:CHENG Hou-Yan. E-mail: chyzxhy123@163.com
Supported by:
International Science & Technology Cooperation Program of China(2013DFA51000);National Natural Science Foundation of China (51462015);Project of Jiangxi Provincial Department of Science and Technology (20122BDH80003)

摘要/Abstract

摘要：

采用水热合成法制备基于钛箔的ZnO纳米片薄膜, 采用化学浴沉积法在ZnO纳米片薄膜表面原位沉积ZnO纳米粒和微球, 制备了ZnO纳米片/纳米粒/微球复合结构薄膜, 并将膜组装成柔性染料敏化太阳能电池。研究了钛箔预处理方式、化学浴沉积工艺对ZnO薄膜和电池性能的影响。采用X射线衍射仪、透射电子显微镜和扫描电子显微镜对钛箔和ZnO薄膜的物相组成和形貌进行表征, 采用太阳光模拟器和数字源表测试了电池的J-V光电性能曲线, 通过电化学阻抗谱分析了电池内部电子传输情况。研究结果表明: 当钛箔基底采用酸抛光处理, 将所得ZnO纳米片膜用已经预热24 h的0.15 mol/L二水乙酸锌甲醇溶液改性5 h, 所得电池光电性能最好, 其短路电流密度、开路电压、填充因子和光电转化率分别为11.26 mA/cm², 0.67 V, 0.60和4.51%。

关键词: 柔性染料敏化太阳能电池, ZnO纳米片, 复合光阳极, 电池性能

Abstract:

ZnO nanosheets/nanoparticles/microspheres composite photoanodes were synthesized in two steps. ZnO nanosheets photoanodes on Ti foil substrates were first prepared with hydrothermal synthesis method, on which ZnO nanoparticles and microspheres were deposited by using chemical bath deposition method. The corresponding photoanodes were assembled into flexible dye-sensitized solar cells (FDSSCs). Effect of Ti foil substrates pretreatment methods and chemical bath deposition process on the properties of ZnO thin films and devices were mainly studied. Phase composition and morphology of Ti foil substrates and ZnO films were characterized with XRD, SEM and TEM. J-V curves of the FDSSCs were tested by solar simulator and Keithley 2400. Electrochemical impedance spectroscopy (EIS) was also carried out to analyze the internal electronic transmission. The results show that when the Ti foil substrates were treated by using acid polishing, and the ZnO nanosheets were modified for 5 h by immersing in 0.15 mol/L methanol solution of zinc acetate after preheat treatment for 24 h, the FDSSCs displayed optimum performance. Its short circuit current density, open circuit voltage, fill factor and photoelectric conversion efficiency were 11.26 mA/cm², 0.67 V, 0.60 and 4.51%, respectively.

Key words: flexible dye-sensitized solar cells, ZnO nanosheets, composite structure ZnO photoanode, performance

中图分类号:

TQ174

程厚燕, 罗俊, 黄丽群, 李家科, 杨志胜, 郭平春, 王艳香, 张琦锋. 基于ZnO纳米片多级结构的柔性染料敏化太阳能电池的制备[J]. 无机材料学报, 2018, 33(5): 507-514.

CHENG Hou-Yan, LUO Jun, HUANG Li-Qun, LI Jia-Ke, YANG Zhi-Sheng, GUO Ping-Chun, WANG Yan-Xiang, ZHANG Qi-Feng. Preparation of Flexible Dye-sensitized Solar Cells Based on Hierarchical Structure ZnO Nanosheets[J]. Journal of Inorganic Materials, 2018, 33(5): 507-514.

图/表 10

图1 未处理钛箔、酸抛光处理钛箔和酸抛光加双氧水处理钛箔的XRD图谱

Fig. 1 XRD patterns of pristine Ti foil substrate, acid polished and acid+H2O2 treated Ti foil substrate

图2 (a)未处理钛箔、(b)酸抛光钛箔和(c)酸抛光加双氧水处理钛箔的SEM表面照片

Fig. 2 Surface SEM images of (a) pristine Ti foil substrate, (b) acid polished Ti foil substrate and (c) acid+H2O2 treated Ti foil substrate

图3 A-FDSSCs和AH-FDSSCs的SEM照片

Fig. 3 SEM images of A-FDSSCs and AH-FDSSCs(a) Cross view of A-FDSSCs; (b) Top view of A-FDSSCs; (c) Cross view of AH-FDSSCs; (d) Top view of AH-FDSSCs

图4 A-FDSSCs和AH-FDSSCs的J-V曲线

Fig. 4 J-V curves of A-FDSSCs and AH-FDSSCs

表1 A-FDSSCs和AH-FDSSCs的光电性能参数

Table 1 Photoelectric performance parameters of A-FDSSCs and AH-FDSSCs

Samples	V_oc/V	J_sc/(mA∙cm^-2)	FF	PCE/%
A-FDSSCs	0.67	7.46	0.64	3.20
AH-FDSSCs	0.69	3.79	0.46	1.20

图5 ZnO薄膜的SEM照片

Fig. 5 SEM images of ZnO films (a) The cross view of ZnO NSs; (b) and (c) The top view of ZnO NSs; (d) The cross view of ZnO NSs/NPs/MSs-1; (e) and (f) The top view of ZnO NSs/NPs/MSs-1; (g) The cross view of ZnO NSs/NPs/MSs-2; (h) and (i) The top view of ZnO NSs/NPs/MSs-2

图6 ZnO NSs/NPs/MSs-2的TEM照片(a)和高分辨晶格像图(b)

Fig. 6 TEM image (a) and HRTEM image (b) of ZnO NSs/ NPs/MSs-2

图7 A-FDSSCs、1-FDSSCs和2-FDSSCs的J-V曲线

Fig. 7 J-V curves of A-FDSSCs, 1-FDSSCs and 2-FDSSCs

图8 A-FDSSCs、1-FDSSCs和2-FDSSCs的Nyquist图谱(a)和相应的Bode图谱(b)

Fig. 8 The Nyquist plots (a) and corresponding Bode plots (b) of A-FDSSCs, 1-FDSSCs and 2-FDSSCs

表2 A-FDSSCs, 1-FDSSCs和2-FDSSCs的光电性能参数

Table 2 Photoelectric performance of A-FDSSCs, 1-FDSSCs and 2-FDSSCs

Samples	V_oc/V	J_sc/(mA∙cm^-2)	FF	PCE/%	R₂/Ω	τ_n/ms
A-FDSScs	0.67	7.46	0.64	3.20	277.2	8.60
1-FDSSCs	0.67	11.14	0.60	4.45	371.7	11.70
2-FDSSCs	0.67	11.26	0.60	4.51	547.4	12.30

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基于ZnO纳米片多级结构的柔性染料敏化太阳能电池的制备

Preparation of Flexible Dye-sensitized Solar Cells Based on Hierarchical Structure ZnO Nanosheets

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