Can perovskite inspired bismuth halide nanocrystals outperform their lead counterparts?,Journal of Materials Chemistry A

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Can perovskite inspired bismuth halide nanocrystals outperform their lead counterparts?
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-06-02 , DOI: 10.1039/d0ta03490h
Sathy Harshavardhan Reddy _{1,

2,

3,

4,

5} , Ranadeep Raj Sumukam _{1,

2,

3,

4,

5} , Banavoth Murali _{1,

2,

3,

4,

5}

Affiliation

Despite the great success of lead halide perovskites (LHPs) as the most promising semiconductors, the development of non-toxic and stable nanocrystals (NCs) remains the key obstacle to date. Under these circumstances, bismuth halide perovskite (BHPs) have gained considerable attention due to their high defect tolerance and excellent photo-, moisture, and thermal stabilities. Interest in BHPs also has stimulated investigations into colloidal nanoparticles, and empathetically the efforts of various researchers are underway to synthesize BHP NCs exhibiting similar emissive properties matching those of LHP NCs. The BHP NCs still suffer from low photoluminescence quantum efficiencies (PLQYs), large band gaps, large exciton binding energies, and effective carrier masses. Therefore, the current perspective lays out our analytical views on improving strategies for the BHP NC research to flourish. Here, we provide insights on the advances in the energy landscapes, which remain critical for various optoelectronic applications. We also provide a glimpse into the challenges, advances, and potential future directions for the uses of BHP NCs in commercial sectors ranging from LEDs, photodetectors, electronic memristors, photovoltaics and photocatalytic applications.

中文翻译：

钙钛矿激发的卤化铋纳米晶体能否超过其领先者？

尽管卤化钙钛矿（LHPs）作为最有前途的半导体取得了巨大的成功，但无毒和稳定的纳米晶体（NCs）的发展仍然是迄今为止的主要障碍。在这种情况下，卤化钙钛矿（BHP）由于具有较高的耐缺陷性以及出色的光，湿和热稳定性而备受关注。人们对BHP的兴趣也激发了对胶体纳米颗粒的研究，并且同理，各种研究人员正在努力合成具有与LHP NC相似的发射特性的BHP NC。必和必拓NCs仍然遭受光致发光量子效率（PLQYs）低，带隙大，激子结合能大和有效载流子质量的困扰。因此，当前观点提出了我们对BHP NC研究蓬勃发展的改进策略的分析观点。在这里，我们提供了有关能源格局进展的见解，这些进展对于各种光电应用仍然至关重要。我们还简要介绍了必和必拓NC在商业领域的使用，LED，光电探测器，电子忆阻器，光伏和光催化应用的挑战，进展和潜在的未来方向。

更新日期：2020-07-07

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