Extending the Continuous Operating Lifetime of Perovskite Solar Cells with a Molybdenum Disulfide Hole Extraction Interlayer,Advanced Energy Materials

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Extending the Continuous Operating Lifetime of Perovskite Solar Cells with a Molybdenum Disulfide Hole Extraction Interlayer
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-01-17 , DOI: 10.1002/aenm.201702287
George Kakavelakis _{1,

2} , Ioannis Paradisanos ₃ , Barbara Paci ₄ , Amanda Generosi ₄ , Michael Papachatzakis ₁ , Temur Maksudov _{1,

2} , Leyla Najafi ₅ , Antonio Esaú Del Rio Castillo ₅ , George Kioseoglou _{2,

3} , Emmanuel Stratakis ₃ , Francesco Bonaccorso ₅ , Emmanuel Kymakis ₁

Affiliation

Solution‐processed organic–inorganic lead halide perovskite solar cells (PSCs) are considered as one of the most promising photovoltaic technologies thanks to both high performance and low manufacturing cost. However, a key challenge of this technology is the lack of ambient stability over prolonged solar irradiation under continuous operating conditions. In fact, only a few studies (carried out in inert atmosphere) already approach the industrial standards. Here, it is shown how the introduction of MoS₂ flakes as a hole transport interlayer in inverted planar PSCs results in a power conversion efficiency (PCE) of ≈17%, overcoming the one of the standard reference devices. Furthermore, this approach allows the realization of ultrastable PSCs, stressed in ambient conditions and working at continuous maximum power point. In particular, the photovoltaic performances of the proposed PSCs represent the current state‐of‐the‐art in terms of lifetime, retaining 80% of their initial performance after 568 h of continuous stress test, thus approaching the industrial stability standards. Moreover, it is further demonstrated the feasibility of this approach by fabricating large‐area PSCs (0.5 cm² active area) with MoS₂ as the interlayer. These large‐area PSCs show improved performance (i.e., PCE = 13.17%) when compared with the standard devices (PCE = 10.64%).

中文翻译：

带有二硫化钼空穴萃取中间层的钙钛矿太阳能电池的连续使用寿命

固溶处理的有机-无机卤化铅钙钛矿太阳能电池（PSC）由于其高性能和低制造成本而被认为是最有前途的光伏技术之一。然而，该技术的关键挑战是在连续操作条件下，长时间的太阳辐射缺乏环境稳定性。实际上，只有少数研究（在惰性气氛中进行）已经接近工业标准。在此，展示了如何引入MoS ₂薄片作为倒置平面PSC中的空穴传输夹层会导致≈17％的功率转换效率（PCE），克服了标准参考器件之一的不足。此外，这种方法可以实现超稳定的PSC，这些PSC在环境条件下承受压力并在连续最大功率点下工作。特别是，拟议的PSC的光伏性能代表了寿命方面的最新技术水平，在568 h连续应力测试后仍保持了其初始性能的80％，从而达到了工业稳定性标准。此外，通过用MoS ₂制造大面积的PSC（有效面积为0.5 cm ²）进一步证明了该方法的可行性。作为中间层。与标准设备（PCE = 10.64％）相比，这些大面积的PSC显示出更高的性能（即PCE = 13.17％）。

更新日期：2018-01-17

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