Evaluation of the Passivation Effects of PEDOT:PSS on Inverted Perovskite Solar Cells
Evaluation of the Passivation Effects of PEDOT:PSS on Inverted Perovskite Solar Cells
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DOI：
10.1002/aenm.202202713
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发表时间：
2022-10
影响因子：
27.8
通讯作者：
Y. Qi;Mohammed Almtiri;Hari Giri;Surabhi Jha;Guorong Ma;A. K. Shaik;Qiqi Zhang;N. Pradhan;X. Gu;N. Hammer;Derek L. Patton;Colleen N. Scott;Qilin Dai
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文献类型：
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作者：
Y. Qi;Mohammed Almtiri;Hari Giri;Surabhi Jha;Guorong Ma;A. K. Shaik;Qiqi Zhang;N. Pradhan;X. Gu;N. Hammer;Derek L. Patton;Colleen N. Scott;Qilin Dai
聚（3,4‐乙烯二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT:PSS）是钙钛矿太阳能电池（PSCs）中常用的空穴传输材料。然而，PEDOT:PSS器件表现出较大的开路电压（Voc）损耗和低效率，这是由于PEDOT:PSS与钙钛矿的不匹配的能级排列和不良的界面。本文设计了聚苯胺（PANI）、聚苯胺咔唑（P1）、聚苯胺苯恶嗪（P2）和聚苯胺吩噻嗪（P3）的三种不同能级的聚合物类似物，以修饰PEDOT:PSS与钙钛矿层之间的界面，提高器件性能。通过评估基于MAPbI3的psc的功函数调节、钙钛矿生长控制和界面修饰，证明了聚合物对器件性能的影响。制备了低带隙Sn-Pb基psc以证实聚合物的影响。通过对PEDOT:PSS - based有机太阳能电池和基于P1， P2和P3修饰的PEDOT:PSS的MAPbI3 PSCs的比较研究，评估了三种效应。三种影响的贡献大小依次为功函数调节>表面改性>钙钛矿生长控制。用P2修饰的MAPbI3 PSCs具有1.13 V的高Voc和21.06%的高功率转换效率。这项工作为基于PEDOT:PSS的光电器件的界面钝化效应提供了基本的理解。
Poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is a popular hole transport material in perovskite solar cells (PSCs). However, the devices with PEDOT:PSS exhibit large open‐circuit voltage (Voc) loss and low efficiency, which is attributed to mismatched energy level alignment and the poor interface of PEDOT:PSS and perovskite. Here, three polymer analogues to polyaniline (PANI), PANI–carbazole (P1), PANI–phenoxazine (P2), and PANI–phenothiazine (P3) are designed with different energy levels to modify the interface between PEDOT:PSS and the perovskite layer and improve the device performance. The effects of the polymers on the device performance are demonstrated by evaluating the work function adjustment, perovskite growth control, and interface modification in MAPbI3‐based PSCs. Low bandgap Sn–Pb‐based PSCs are also fabricated to confirm the effects of the polymers. Three effects are evaluated through the comparison study of PEDOT:PSS‐based organic solar cells and MAPbI3 PSCs based on the PEDOT:PSS modified by P1, P2, and P3. The order of contribution for the three effects is work function adjustment > surface modification > perovskite growth control. MAPbI3 PSCs modified with P2 exhibit a high Voc of 1.13 V and a high‐power conversion efficiency of 21.06%. This work provides the fundamental understanding of the interface passivation effects for PEDOT:PSS‐based optoelectronic devices.