Kim Bora, Kim Moonhoe, Kim Hyojung, Jeong Sohee, Yang JungYup, Jeong Mun Seok
Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea.
Department of Physics, Kunsan National University, Gunsan54150, Republic of Korea.
ACS Appl Mater Interfaces. 2022 Aug 10;14(31):35726-35733. doi: 10.1021/acsami.2c08680. Epub 2022 Jul 29.
Perovskite solar cells (PSCs) have been receiving considerable attention as next-generation solar cells. However, their short lifetime is a major obstacle to their commercialization. In addition to the properties of the materials used in PSCs, their interfaces play an important role in device stability by maintaining their initial design. In this study, we developed a transition-metal dichalcogenide (TMD) as a stable and efficient interlayer. MoS and WSe were applied to both the hole and electron transport sides of the PSCs with general FTO/TiO/MAPbI/Spiro-OMeTAD/Au structures, respectively. Owing to efficient charge transfer by TMD interlayers, our PSCs achieved a 19.24% efficiency, which is higher than the efficiency of the control devices (18.22%). Furthermore, the device stability was markedly improved by the passivation and strain-release effects of the TMD interlayers. Thus, the PSCs with TMD interlayers demonstrated a stable performance over 1000 h under damp heat (85 °C and 85% relative humidity) conditions.
钙钛矿太阳能电池（PSCs）作为下一代太阳能电池受到了广泛关注。然而，其短寿命是其商业化的主要障碍。除了PSCs中使用的材料特性外，它们的界面通过维持其初始设计在器件稳定性方面起着重要作用。在本研究中，我们开发了一种过渡金属二硫属化物（TMD）作为稳定且高效的中间层。分别将MoS和WSe应用于具有一般FTO/TiO/MAPbI/Spiro-OMeTAD/Au结构的PSCs的空穴和电子传输侧。由于TMD中间层的有效电荷转移，我们的PSCs实现了19.24%的效率，高于对照器件的效率（18.22%）。此外，TMD中间层的钝化和应变释放效应显著提高了器件稳定性。因此，具有TMD中间层的PSCs在湿热（85°C和85%相对湿度）条件下1000小时内表现出稳定的性能。
