钙钛矿太阳能电池界面工程优化研究

doi:10.15541/jim20230169

无机材料学报 ›› 2023, Vol. 38 ›› Issue (11): 1323-1330.DOI: 10.15541/jim20230169

钙钛矿太阳能电池界面工程优化研究

王烨¹^,³(), 焦忆楠³, 郭军霞², 刘欢³, 李睿³, 尚子璇¹, 张士东⁴, 王永浩⁴, 耿海川⁴, 侯登录², 赵晋津¹()

1.河北师范大学化学与材料科学学院, 薄膜太阳能电池材料与器件河北省工程研究中心, 石家庄 050024
2.河北师范大学物理学院, 石家庄 050024
3.石家庄铁道大学材料科学与工程学院, 石家庄 050043
4.河北省计量监督检测研究院, 石家庄 050052

收稿日期:2023-04-06 修回日期:2023-06-30 出版日期:2023-07-28 网络出版日期:2023-07-28
通讯作者: 赵晋津, 教授. E-mail: jinjinzhao2012@163.com
作者简介:王烨(1995-), 男, 硕士研究生. E-mail: yestruggle20@163.com
基金资助:
国家自然科学基金(U2130128);国家自然科学基金(11772207);中央引导地方科技发展资金(216Z4302G);河北省市场监管局科技计划(2023ZC03);河北省创新能力提升计划(22567604H);京津冀基础研究合作专项(H2022205047);京津冀基础研究合作专项(22JCZXJC00060);京津冀基础研究合作专项(E3B33911DF);河北师范大学博士科研启动基金(L2023B18);石家庄铁道大学研究生创新资助项目(YC2022068)

Optimization of Interfacial Engineering of Perovskite Solar Cells

WANG Ye¹^,³(), JIAO Yinan³, GUO Junxia², LIU Huan³, LI Rui³, SHANG Zixuan¹, ZHANG Shidong⁴, WANG Yonghao⁴, GENG Haichuan⁴, HOU Denglu², ZHAO Jinjin¹()

1. Engineering Research Center of Thin Film Solar Cell Materials and Devices, Hebei Province, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China
2. College of Physics, Hebei Normal University, Shijiazhuang 050024, China
3. School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
4. Institute of Metrology Hebei Province, Shijiazhuang 050052, China

Received:2023-04-06 Revised:2023-06-30 Published:2023-07-28 Online:2023-07-28
Contact: ZHAO Jinjin, professor. E-mail: jinjinzhao2012@163.com
About author:About author: WANG Ye (1995-), male, Master candidate. E-mail: yestruggle20@163.com
Supported by:
National Natural Science Foundation of China(U2130128);National Natural Science Foundation of China(11772207);The Central Government Guiding Local Science and Technology Development Project(216Z4302G);The Hebei Administration for Market Supervision Science and Technology Project List(2023ZC03);The Innovation Capability Improvement Plan Project of Hebei Province(22567604H);The Basic Research Cooperation Special Foundation of Beijing-Tianjin-Hebei Region(H2022205047);The Basic Research Cooperation Special Foundation of Beijing-Tianjin-Hebei Region(22JCZXJC00060);The Basic Research Cooperation Special Foundation of Beijing-Tianjin-Hebei Region(E3B33911DF);Ph.D Scientific Research Start-up Fund of Hebei Normal University(L2023B18);Postgraduate Innovation Funding Project of Shijiazhuang Tiedao University(YC2022068)

摘要/Abstract

摘要：

有机-无机杂化钙钛矿太阳能电池(PSCs)具有高能量转换效率、低能耗和低成本等优点, 但PSCs界面缺陷引起的非辐射复合严重阻碍了其光电转换性能提升。本研究通过降低氧化镍空穴传输层的粒径尺寸, 提高粒径均匀性, 实现了光生空穴在电池界面的高效传输; 并通过优化钙钛矿薄膜的反溶剂作用时间提升结晶质量, 降低界面非辐射复合, 改善空穴传输层和钙钛矿的界面问题, 使钙钛矿太阳能电池的能量转换效率(PCE)从10.11%提高到18.37%。开尔文探针力显微镜(KPFM)研究表明, 界面优化后的钙钛矿薄膜在亮态下的表面接触电位差相比于暗态下增加了120.39 mV。采用压电力原子力显微镜(PFM)分析钙钛矿薄膜明暗态铁电性能, 发现界面优化后的钙钛矿铁电极化变化微弱, 说明优化界面有效降低了电池界面缺陷和迟滞效应。该研究结果表明, 优化氧化镍空穴传输层, 提高钙钛矿薄膜质量, 减少了界面缺陷, 降低了非辐射复合和电池迟滞效应, 提高了钙钛矿太阳能电池的能量转换效率。

关键词: 钙钛矿太阳能电池, 原子力显微镜, 接触电位差, 铁电极化

Abstract:

Hybrid organic-inorganic perovskite solar cells (PSCs) have attracted global attention as one of the most promising photovoltaic materials due to their high efficiency, low energy consumption and low cost. However, non-radiative recombination caused by interface defects severely inhibits the performance of PSCs. To solve this critical issue, the particle size of nickel oxide (NiO_x) hole transport layer was reduced to improve the particle size uniformity and achieve efficient hole transport. Furthermore, the antisolvent acting time of the perovskite film was optimized to reduce the interfacial non-radiative recombination and interfacial defect. As a result, the crystalline quality is improved and power conversion efficiency (PCE) of the perovskite solar cells increase from 10.11% to 18.37%. Kelvin probe atomic force microscopy (KPFM) study shows that the contact potential difference (CPD) of the optimized perovskite film in the illumination condition increases by 120.39 mV compared with that under the dark condition. Analysis by piezoelectric atomic force microscopy (PFM) reveals that the ferroelectric polarization of the optimized interfacial perovskite films hardly changes from illumination to dark states, indicating that reducing interfacial defects can decrease the hysteresis effect of the PSCs. It is concluded that optimizing the NiO_x hole transport layer and improving the quality of perovskite film can reduce the interface defects, the non-radiative recombination and the hysteresis effect, and improve PCE of perovskite solar cells.

Key words: perovskite solar cell, atomic force microscopy, contact potential difference, ferroelectric polarization

中图分类号:

O649

王烨, 焦忆楠, 郭军霞, 刘欢, 李睿, 尚子璇, 张士东, 王永浩, 耿海川, 侯登录, 赵晋津. 钙钛矿太阳能电池界面工程优化研究[J]. 无机材料学报, 2023, 38(11): 1323-1330.

WANG Ye, JIAO Yinan, GUO Junxia, LIU Huan, LI Rui, SHANG Zixuan, ZHANG Shidong, WANG Yonghao, GENG Haichuan, HOU Denglu, ZHAO Jinjin. Optimization of Interfacial Engineering of Perovskite Solar Cells[J]. Journal of Inorganic Materials, 2023, 38(11): 1323-1330.

图/表 7

图1 NiOx-3、NiOx-4、NiOx-5钙钛矿太阳能电池的(a) J-V曲线和(b~d)相应钙钛矿薄膜的SEM形貌

Fig. 1 (a) J-V curves of PSCs and (b-d) SEM morphologies for NiOx-3, NiOx-4 and NiOx-5 “F” and “R” refer to forward scanning and reverse scanning, respectively

图2 PTF-5、PTF-15、PTF-25钙钛矿太阳能电池的(a)J-V曲线和相应(b~d)钙钛矿薄膜的SEM形貌

Fig. 2 (a) J-V curves of PSCs and (b-d) SEM morphologies for PTF-5, PTF-15 and PTF-25

图3 钙钛矿薄膜的晶体结构和光学性能

Fig. 3 Crystal structure and absorbance characterization of perovskite film (a)XRD pattern of MAPbI3 film; (b) UV-Vis absorption spectrum and Tauc plot of MAPbI3 film

图4 PTF-15 MAPbI3薄膜在亮态和暗态条件下的形貌和接触电位差

Fig. 4 Morphologies and contact potential difference of PTF-15 MAPbI3 films under illumination and dark conditions. (a, b) Morphologies of MAPbI3 film under (a) illumination and (b) dark conditions; (c) Height distributions of MAPbI3 morphology under illumination and dark conditions; (d, e) CPD maps of MAPbI3 morphologies under (d) illumination and (e) dark; (f) Potential statistical diagram of CPD. Colorful figures are available on website

图5 PTF-15 MAPbI3薄膜在亮态和暗态条件下原位的形貌和面外、面内铁电极性

Fig. 5 In-situ characterization of the out-of-plane and in-plane ferroelectric polarization of PTF-15 MAPbI3 films under illumination and dark conditions (a, b) Morphologies of MAPbI3 film under (a) illumination and (b) dark conditions; (c) Height distributions of MAPbI3 morphologies under illumination and dark conditions; (d, e) Out-of-plane ferroelectric polarization images under (d) illumination and (e) dark conditions; (f) Out-of-plane ferroelectric polarization distributions of the topography under illumination and dark conditions; (g, h) In-plane ferroelectric polarization images under (g) illumination and (h) dark conditions; (i) In-plane ferroelectric polarization distributions of MAPbI3 film under illumination and dark conditions. Colorful figures are available on website

图S1 NiOx-2钙钛矿太阳能电池J-V曲线

Fig. S1 J-V curve of NiOx-2 PSCs

图S2 优化前后钙钛矿太阳能电池PCE的箱型图

Fig. S2 Box plots of PCE of perovskite solar cells before and after optimization

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钙钛矿太阳能电池界面工程优化研究

Optimization of Interfacial Engineering of Perovskite Solar Cells

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