基于喷涂法制备氧化锡薄膜的钙钛矿太阳能电池

王熹; 赵志国; 秦校军; 熊继光; 董超; 白阳; 李煜璟; 陈棋

doi:10.3788/CO.20191205.1040

基于喷涂法制备氧化锡薄膜的钙钛矿太阳能电池

doi: 10.3788/CO.20191205.1040

王熹^{1, 2,},
赵志国^1, ,,
秦校军¹,
熊继光¹,
董超¹,
白阳²,
李煜璟²,
陈棋^2, ,

1.
中国华能集团清洁能源技术研究院有限公司, 北京 102209
2.
北京理工大学材料学院, 北京 100081

基金项目:

国家自然科学基金项目 51673025

详细信息

作者简介:
王熹(1998-), 男, 河南安阳人, 2016年进入北京理工大学材料学院学习, 2018年进入华能集团清洁能源研究院参加钙钛矿太阳能电池的产业化项目实习, 主要从事有机无机杂化金属卤素钙钛矿太阳能电池的研究。E-mail:1120162210@bit.edu.cn

赵志国(1983-), 男, 河北霸州人, 2007年于清华大学获得学士学位, 2012年于中国科学院化学研究所获得博士学位, 目前在中国华能集团清洁能源技术研究院担任高级工程师, 从事新能源、光伏领域的技术研发与产业化工作。E-mail:zg_zhao@qny.chng.com.cn

陈棋(1982-), 男, 江苏无锡人, 教授、博士生导师, 2007年于清华大学获得硕士学位, 2012年于加州大学洛杉矶分校获得博士学位, 主要从事有机无机杂化及复合材料的开发与应用方面的研究, 包括光电材料制备、薄膜太阳能电池的制备及工艺开发等交叉前沿项目。E-mail:qic@bit.edu.cn

中图分类号: O649.4
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出版历程
- 收稿日期: 2019-03-07
- 修回日期: 2019-04-03
- 刊出日期: 2019-10-01

Perovskite solar cells based on a spray-coating tin oxide film

WANG Xi^{1, 2
,},
ZHAO Zhi-guo^{1
, ,},
QIN Xiao-jun¹,
XIONG Ji-guang¹,
DONG Chao¹,
BAI Yang²,
LI Yu-jing²,
CHEN Qi^{2
, ,}

1.
Huaneng Group Clean Energy Technology Research Institute Co., Led., Beijing 102209, China
2.
School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

Funds:

National Natural Science Foundation of China 51673025

More Information

Corresponding author: ZHAO Zhi-guo, E-mail: zg_zhao@qny.chng.com.cn; CHEN Qi, E-mail:qic@bit.edu.cn

摘要

摘要: 电子传输层对于钙钛矿太阳能电池载流子的抽取与传输起着至关重要的作用，氧化锡由于其优异特性被作为电子传输层广泛应用于正式平板结构钙钛矿太阳能电池中。而目前制备氧化锡薄膜的工艺方法无法满足大面积、自动化等工业需求，亟待发掘新的工艺手段。为解决此问题，本文使用喷涂法成功制备了高质量的氧化锡薄膜。实验结果表明，基于喷涂法制备氧化锡薄膜的钙钛矿太阳能电池对于氧化锡薄膜的厚度有较高的依赖性，通过优化薄膜厚度，电池的光电转化效率可达到15.72%；喷涂得到的氧化锡薄膜存在咖啡环现象，使得串联电阻提高，限制了光电转化效率，但可以通过进一步细化液滴来解决。本文为钙钛矿产业化进程中高质量氧化锡薄膜的制备提供了新的思路与方法。
- 钙钛矿太阳能电池 /
- 电子传输层 /
- 氧化锡 /
- 喷涂法
Abstract: The electron transport layer(ETL) plays a crucial role in carrier extraction and transportation in perovskite solar cells. Tin(Ⅳ) oxide is widely used as ETL-material in planar perovskite solar cells due to its excellent properties. However, current processes for tin oxide film preparation can hardly meet industrial requirements, such as large-scale and automatic fabrication. Therefore, developing a new fabrication method suitable for industrialization is in urgent demanded. To solve this problem, a high-quality tin oxide film was successfully created using the spray coating method. Experimental results show that the performance of the perovskite solar cells is highly dependent on the thickness of the spray-coated tin oxide film. By optimizing film thickness, power conversion efficiency(PCE) can be improved to 15.72%. The film exhibits a coffee ring phenomenon, which increases the series resistance and limits the PCE. That can be solved by further decreasing the size of the droplets. This paper demonstrates a new method for the fabrication of high-quality, highly adaptable tin oxide films for the industrialization of perovskite solar cells.
- perovskite solar cells /
- electron transport layer /
- tin oxide /
- spraying-coating method

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图 1 钙钛矿太阳能电池的结构示意图

Figure 1. Structure diagram of perovskite solar cell

下载: 全尺寸图片幻灯片

图 2 喷涂装置及过程示意图

Figure 2. Schematic of spraying machine and spraying process

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图 3 (a) 器件性能与喷涂时间的关系；(b)器件的J-V曲线图

Figure 3. (a)Relation between device performance and spraying time; (b)J-V curve of the device with optimal performance

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图 4 器件串联电阻、并联电阻与喷涂时间的关系

Figure 4. Relation between the series resistance, shunt resistance of solar cells and spraying time

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图 5 基于最优化喷涂氧化锡(1)与基于旋涂氧化锡(2)的器件电化学阻抗Nyquist谱图

Figure 5. Nyquist plots for EIS measurement of optimal spray-coating-SnO₂-based and spin-coating-SnO₂-based solar cells

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图 6 在最优化条件下的喷涂氧化锡扫描电子显微镜图谱

Figure 6. SEM image of spraying SnO₂ under optimized condition

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图 7 (a) 喷涂时间为40 s和(b)喷涂时间为80 s的氧化锡薄膜光学显微镜图谱

Figure 7. Optical microscopic images of spray-coating SnO₂ with spraying time of (a)40 s and 80 s(b)

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表 1 不同喷涂时间下氧化锡器件的光电性能

Table 1. Photoelectric performance of devices with spray-coating SnO₂ films prepared with different spraying time

Time/s	V_oc/V	J_sc/(A·cm^-2)	PCE/%	FF/%
40	0.84	13.02	3.80	34.62
50	0.95	21.87	13.03	62.87
55	1.02	22.03	15.72	70.03
80	0.87	18.65	6.87	42.16

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表 2 两种工艺之间最优器件性能对比

Table 2. Photoelectrical performance comparison for the devices prepared by spinning coating and spraying coating devices

Type	V_oc/V	J_sc/(A·cm^-2)	PCE/%	FF/%
Spinnig coating	1.04	22.43	18.14	77.48
Spraying coating	1.02	22.03	15.72	70.03

下载: 导出CSV

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