基于环境友好的绿色反溶剂法的高效CH3NH3PbI3钙钛矿太阳能电池

doi:10.3976/j.issn.1002-4026.2023.03.006

山东科学 ›› 2023, Vol. 36 ›› Issue (3): 46-52.doi: 10.3976/j.issn.1002-4026.2023.03.006

基于环境友好的绿色反溶剂法的高效CH₃NH₃PbI₃钙钛矿太阳能电池

孟婧^a(), 高博文^b^,^*()

a.泰山学院网络与教育技术中心,山东泰安 271021
b.泰山学院机械与建筑工程学院光伏材料与建筑一体化研究所,山东泰安 271021

收稿日期:2022-09-04 出版日期:2023-06-20 发布日期:2023-06-07
通信作者: * 高博文。E-mail:gbwhappy@163.com
作者简介:孟婧(1983—),女,硕士,讲师,研究方向为有机光伏材料与器件。E-mail :mmmjjjcg@163.com
基金资助:
山东省自然科学基金重点项目(ZR2020KF001);山东省泰安市科技创新发展项目(2021GX017);泰山学院教育教学研究专项重点项目(JY-01-202101);泰山学院教学改革与研究项目(JG202122)

Environment-friendly high-efficiency CH₃NH₃PbI₃ perovskite solar cells fabrication based on green antisolvent method

MENG Jing^a(), GAO Bowen^b^,^*()

a. Network and Educational Technology Center, Taishan University, Tai'an 271021,China
b. Institute of Photovoltaic Materials and Building Integration, School of Mechanical and Civil Engineering, Taishan University, Tai'an 271021,China

Received:2022-09-04 Online:2023-06-20 Published:2023-06-07

摘要/Abstract

摘要：

CH₃NH₃PbI₃(MAPbI₃)钙钛矿电池的能量转换效率与钙钛矿薄膜质量密切相关。为了获得高质量的钙钛矿薄膜,通过优化薄膜制备方法和工艺流程,发现绿色反溶剂乙酸丙酯和丙二醇甲醚能促进PbI₂粒子的成核,提供CH₃NH₃PbI₃钙钛矿晶体的异相成核位点,从而促进钙钛矿晶体的快速生长。研究表明,与常用的有毒溶剂氯苯处理的钙钛矿薄膜相比,通过乙酸丙酯和丙二醇甲醚处理的薄膜晶粒较大,均方根值较低,表面粗糙度获得较大优化,可以获得晶粒尺寸均匀、接近钙钛矿载流子扩散长度的全覆盖钙钛矿薄膜。测试不同处理条件下的器件性能发现,与氯苯处理的CH₃NH₃PbI₃钙钛矿太阳能电池(能量转换效率为17.86%)相比,绿色反溶剂丙二醇甲醚处理的器件的最佳效率为21.60%,提高近21%,该实验结果对今后获得环境友好的高质量钙钛矿型太阳能电池具有一定的参考价值和指导意义。

关键词: 钙钛矿电池, 绿色反溶剂, 形貌优化, 器件效率

Abstract:

The energy conversion efficiency of CH₃NH₃PbI₃ (MAPPbI₃) perovskite solar cells is closely related to the quality of the perovskite film. To obtain high quality perovskite films, the film preparation method and process were optimized. It was found that the green solvents, propylene glycol methyl ether acetate and glycerol, can promote nucleation of PbI₂ particles, provide heterogeneous nucleation sites for CH₃NH₃PbI₃ perovskite crystals, and thus facilitate the rapid growth of perovskite crystals. Compared to perovskite films treated with the common toxic solvent chlorobenzene, films treated with propylene glycol methyl ether acetate and glycerol have larger grain size, lower root-mean-square value, and greater surface roughness optimization. This can result in a uniform, full-coverage perovskite film that is close to the perovskite carrier diffusion length. The performance of devices under different treatment conditions was tested and it was found that compared to CH₃NH₃PbI₃ perovskite solar cells treated with chlorobenzene (energy conversion efficiency of 17.86%), the device treated with green solvent glycerol had the highest efficiency of 21.60%, which is an increase of nearly 21%. These experimental results have some reference value and guiding significance for researchers in this field to obtain environmentally friendly high-quality perovskite type solar cells in the future.

Key words: perovskite solar cell, green antisolvent, morphology optimization, device efficiency

中图分类号:

孟婧, 高博文. 基于环境友好的绿色反溶剂法的高效CH₃NH₃PbI₃钙钛矿太阳能电池[J]. 山东科学, 2023, 36(3): 46-52.

MENG Jing, GAO Bowen. Environment-friendly high-efficiency CH₃NH₃PbI₃ perovskite solar cells fabrication based on green antisolvent method[J]. Shandong Science, 2023, 36(3): 46-52.

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参考文献 10

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反溶剂处理	粒径/nm	表面粗糙度/nm	串联电阻/(Ω·cm²)	并联电阻/(Ω·cm²)
丙二醇甲醚	500	12	50	2 000
乙酸丙酯	430	20	150	1 500
氯苯	360	25	300	1 200
参照系	250	30	1 000	300

反溶剂处理	V_oc/V	J_sc/(mA·cm^-2)	填充因子/%	能量转换效率/%
丙二醇甲醚	1.12	25.80	75	21.60
乙酸丙酯	1.12	25.10	72	20.05
氯苯	1.11	23.12	70	17.86
参照系	1.10	20.26	70	15.60

基于环境友好的绿色反溶剂法的高效CH₃NH₃PbI₃钙钛矿太阳能电池

Environment-friendly high-efficiency CH₃NH₃PbI₃ perovskite solar cells fabrication based on green antisolvent method

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