Incorporating quantum dots for high efficiency and stable perovskite photovoltaics,Journal of Materials Chemistry A

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Incorporating quantum dots for high efficiency and stable perovskite photovoltaics
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-11-02 , DOI: 10.1039/d0ta09096d
Yuetian Chen _{1,

2,

3,

4} , Yixin Zhao _{1,

2,

3,

4}

Affiliation

Lead halide perovskites have been widely studied for successful photovoltaic applications because of their exceptional optoelectronic properties, high photoconversion efficiencies, facile solution process and low cost. However, both organic–inorganic hybrid perovskite and all-inorganic perovskite solar cells still face the challenges with respect to higher photovoltaic performances and long-term stabilities against various environmental factors. To address these stability issues, solution-processed colloidal perovskite nanocrystals have been introduced into perovskite solar cells either as the sole light absorber material, or a surface additive for bulk perovskite films. The incorporation of perovskite quantum dots onto bulk perovskite thin films has shown great potential on improving the band alignment in solar cell structures, passivating bulk and surface defects, and enhancing overall device performances. Here in this perspective, we summarize the recent development on integrating semiconductor nanocrystals, including perovskite and metal chalcogenide quantum dots, onto bulk perovskite thin films for solar cell device fabrication. We also highlight and provide an outlook of the ongoing research studies regarding how the function and mechanism of this nanocrystal incorporation, the distribution of the added components, as well as the processing route, the chemical composition and the morphology of the nanocrystal can affect the fabricated device performances.

中文翻译：

结合量子点以实现高效稳定的钙钛矿光伏

卤化钙钛矿因其优异的光电性能，高的光转换效率，简便的溶液工艺和低成本而被广泛研究用于成功的光伏应用。但是，有机-无机杂化钙钛矿和全无机钙钛矿太阳能电池在更高的光伏性能和针对各种环境因素的长期稳定性方面仍然面临挑战。为了解决这些稳定性问题，溶液处理的胶态钙钛矿纳米晶体已被引入钙钛矿太阳能电池中，作为唯一的光吸收材料，或作为整体钙钛矿薄膜的表面添加剂。将钙钛矿量子点结合到整体钙钛矿薄膜上显示出巨大的潜力，可以改善太阳能电池结构中的能带排列，钝化体和表面缺陷，并增强整体器件性能。在此，从这一角度出发，我们总结了将包括钙钛矿和硫属元素化物量子点的半导体纳米晶体集成到用于太阳能电池器件制造的整体钙钛矿薄膜上的最新进展。我们还将突出并提供有关正在进行的研究的前景，这些研究涉及这种纳米晶体掺入的功能和机理，所添加组分的分布以及加工路径，纳米晶体的化学组成和形态如何影响制成品。设备性能。包括钙钛矿和金属硫族化物量子点在内的钙钛矿体薄膜上，用于太阳能电池的制造。我们还将突出并提供有关正在进行的研究的前景，这些研究涉及这种纳米晶体掺入的功能和机理，所添加组分的分布以及加工路径，纳米晶体的化学组成和形态如何影响制成品。设备性能。包括钙钛矿和金属硫族化物量子点在内的钙钛矿体薄膜上，用于太阳能电池的制造。我们还将突出并提供有关正在进行的研究的前景，这些研究涉及这种纳米晶体掺入的功能和机理，所添加组分的分布以及加工路径，纳米晶体的化学组成和形态如何影响制成品。设备性能。

更新日期：2020-11-18

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