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Hyperstable Perovskite Solar Cells Without Ion Migration and Metal Diffusion Based on ZnS Segregated Cubic ZnTiO3 Electron Transport Layers
Solar RRL ( IF 6.0 ) Pub Date : 2020-12-15 , DOI: 10.1002/solr.202000654 Faming Han 1 , Yazhuo Wu 1 , Ruiqin He 1 , Yong Hui 1 , Jun Yin 1 , Lansun Zheng 1 , Binghui Wu 1 , Nanfeng Zheng 1
Solar RRL ( IF 6.0 ) Pub Date : 2020-12-15 , DOI: 10.1002/solr.202000654 Faming Han 1 , Yazhuo Wu 1 , Ruiqin He 1 , Yong Hui 1 , Jun Yin 1 , Lansun Zheng 1 , Binghui Wu 1 , Nanfeng Zheng 1
Affiliation
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Perovskite solar cells (PSCs) have attracted great interest in recent decade, however, stability issue and large‐scale application still remain as roadblocks to their practical applications. To settle aforementioned issues, metal diffusion and ion migration should be controlled to improve long‐term operational stability. Herein, cubic zinc metatitanate (ZTO) is optimized and improved by segregating with surface sulfidation. The sulfurized electron transporting layer, label as ZTO‐ZnS, based PSCs achieved an amazing power conversion efficiency (PCE) of 21.3%. A large‐area module (8.0 cm2 active area) based on ZTO‐ZnS is also developed with 15.9% PCE. Furthermore, combining with inorganic CuI hole transporting layer and carbon counter electrode, metal diffusion, and ion migration effect are eliminated drastically in ZTO‐ZnS‐based PSCs. The combined PSC devices can easily keep more than 85% initial PCE after 1 000 h at 85 °C in air with a relative humidity of 85% under maximum power point and continuous AM 1.5G illumination. The persistence in stability is investigated and revealed fully by energy dispersive spectrometer analysis, attributing to the PSC structure which blocks the metal diffusion and ion migration in the devices. A big step forward industrialization and commercialization for PSCs is made.
中文翻译：
基于ZnS隔离的立方ZnTiO3电子传输层的无离子迁移和金属扩散的超稳定钙钛矿太阳能电池
钙钛矿太阳能电池（PSC）在最近十年引起了人们极大的兴趣，但是，稳定性问题和大规模应用仍然是阻碍其实际应用的障碍。为解决上述问题，应控制金属扩散和离子迁移，以提高长期运行稳定性。在此，通过偏析和表面硫化来优化和改善立方偏钛酸锌（ZTO）。硫化的电子传输层（标记为ZTO-ZnS）基于PSC，实现了21.3％的惊人功率转换效率（PCE）。大面积模块（8.0 cm 2基于ZTO-ZnS的有源区域）的PCE也达到15.9％。此外，结合使用无机CuI空穴传输层和碳对电极，可大大消除ZTO-ZnS基PSC中的金属扩散和离子迁移效应。组合的PSC器件在85°C的空气中1000 h后，在最大功率点和连续AM 1.5G照明下，相对湿度为85％的情况下，可以轻松地保持超过85％的初始PCE。通过能量色散谱仪分析研究并充分揭示了稳定性的持久性，这归因于PSC结构，该结构阻止了器件中的金属扩散和离子迁移。向PSC的产业化和商业化迈出了一大步。
更新日期：2020-12-15
中文翻译：
基于ZnS隔离的立方ZnTiO3电子传输层的无离子迁移和金属扩散的超稳定钙钛矿太阳能电池
钙钛矿太阳能电池（PSC）在最近十年引起了人们极大的兴趣，但是，稳定性问题和大规模应用仍然是阻碍其实际应用的障碍。为解决上述问题，应控制金属扩散和离子迁移，以提高长期运行稳定性。在此，通过偏析和表面硫化来优化和改善立方偏钛酸锌（ZTO）。硫化的电子传输层（标记为ZTO-ZnS）基于PSC，实现了21.3％的惊人功率转换效率（PCE）。大面积模块（8.0 cm 2基于ZTO-ZnS的有源区域）的PCE也达到15.9％。此外，结合使用无机CuI空穴传输层和碳对电极，可大大消除ZTO-ZnS基PSC中的金属扩散和离子迁移效应。组合的PSC器件在85°C的空气中1000 h后，在最大功率点和连续AM 1.5G照明下，相对湿度为85％的情况下，可以轻松地保持超过85％的初始PCE。通过能量色散谱仪分析研究并充分揭示了稳定性的持久性，这归因于PSC结构，该结构阻止了器件中的金属扩散和离子迁移。向PSC的产业化和商业化迈出了一大步。
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