<strong>SnO<sub>2</sub></strong> 作散射层的光阳极膜厚对量子点染料敏化太阳能电池光电性能的影响

doi:10.11901/1005.3093.2022.445

材料研究学报

2023, Vol. 37

Issue (7): 554-560 DOI: 10.11901/1005.3093.2022.445

研究论文

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SnO₂ 作散射层的光阳极膜厚对量子点染料敏化太阳能电池光电性能的影响

刘明珠, 樊娆, 张萧宇, 马泽元, 梁城洋, 曹颖, 耿仕通, 李玲(

)

河北大学物理科学与技术学院保定 071002

Effect of Photoanode Film Thickness of SnO₂ as Scattering Layer on the Photovoltaic Performance of Quantum Dot Dye-sensitized Solar Cells

LIU Mingzhu, FAN Rao, ZHANG Xiaoyu, MA Zeyuan, LIANG Chengyang, CAO Ying, GENG Shitong, LI Ling(

)

School of Physical Sciences and Technology, Hebei University, Baoding 071002, China

引用本文:

刘明珠, 樊娆, 张萧宇, 马泽元, 梁城洋, 曹颖, 耿仕通, 李玲. SnO₂ 作散射层的光阳极膜厚对量子点染料敏化太阳能电池光电性能的影响[J]. 材料研究学报, 2023, 37(7): 554-560.
Mingzhu LIU, Rao FAN, Xiaoyu ZHANG, Zeyuan MA, Chengyang LIANG, Ying CAO, Shitong GENG, Ling LI. Effect of Photoanode Film Thickness of SnO₂ as Scattering Layer on the Photovoltaic Performance of Quantum Dot Dye-sensitized Solar Cells[J]. Chinese Journal of Materials Research, 2023, 37(7): 554-560.

全文: PDF(6137 KB) HTML

摘要:

先用一步水热法合成空心纳米球，再将其作为量子点敏化太阳能电池(QDSSCs)光阳极的散射层材料用丝网印刷技术刮涂在TiO₂基底上。组装成的QDSSCs电池具有优异的电化学性能，表明SnO₂的空心球结构有利于电解质的存储，在保证电子高效传输速率的同时提高其化学稳定性，使循环反应更加有效。在QDSSCs的制备过程中，以ZnCuInSe量子点为敏化剂，进一步研究了吸附量子点后不同膜厚的光阳极对太阳能电池光电性能的影响。膜厚为9 μm的SnO₂散射层其最高光电转换效率值7.31%，可应用在QDSSCs中。

关键词 ：无机非金属材料, 量子点敏化太阳能电池, 丝网印刷技术, SnO₂散射层, 光阳极膜厚, 电化学特性

Abstract：

To search superior photoanode materials for further enhancing the cell performance of quantum dot-sensitized solar cells (QDSSCs), the zero-dimensional SnO₂ may be a good option for its excellent cycling stability, high mobility and bandgap tunability. For this purpose, hollow nanospheres of SnO₂, as the candidate material for scattering layer of the photoanode were synthesized by a simple one-step hydrothermal method, and then screen-printed on the TiO₂ substrate to produce a photoanode for quantum dot sensitized solar cells (QDSSCs), which showed excellent electrochemical performance. It is demonstrated that the hollow sphere structure of SnO₂ facilitates the storage of electrolytes and improves its chemical stability while ensuring an efficient electron transfer rate, allowing the cyclic reaction to proceed more efficiently. ZnCuInSe quantum dots were used as sensitizers for the preparation of QDSSCs. Thus it is meaningfull to investigate the effect of photoanodes with different thickness of TiO₂ films printed with quantum dots on the photovoltaic performance of solar cells. Several sets of test results show that when the thickness of the SnO₂ scattering layer is 9 μm, the photoelectric conversion efficiency reaches a maximum value of 7.31%. This opens up the possibility of using SnO₂ in QDSSCs.

Key words： inorganic non-metallic materials quantum dot-sensitized solar cells screen printing techniques SnO₂ scattering layer film thickness of the photoanode electrochemical characteristics

收稿日期: 2022-08-18

ZTFLH:

TQ152

基金资助:国家自然科学基金(51772073);河北省自然科学基金(E2020201030);京津冀协同创新共同体建设专项(21344301D);河北大学2022年大学生创新创业计划训练(2022169);河北大学2022年大学生创新创业计划训练(2022165);河北大学2022年大学生创新创业计划训练(2022170)

通讯作者: 李玲，教授，lilinghbu@163.com，研究方向为多功能纳米光电材料与器件

Corresponding author: LI Ling, Tel: 18733255796, E-mail: lilinghbu@163.com

作者简介: 刘明珠，女，1997年生，硕士生

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图1 SnO2纳米球的制备流程

图2 SnO2材料的SEM图、SnO2材料的TEM照片以及SnO2材料的示意性模型

图3 SnO2材料的XRD谱

图4 无散射层TiO2膜和有散射层TiO2-SnO2膜的紫外-可见吸收(UV-Vis)光谱

表1 不同膜厚的光阳极散射层的光伏性能参数

图5 光电性能分析示意图

表2 不同膜厚光阳极散射层的EIS性能参数

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