Cs2AgInCl6 Double Perovskite Single Crystals: Parity Forbidden Transitions and Their Application For Sensitive and Fast UV Photodetectors,ACS Photonics

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Cs2AgInCl6 Double Perovskite Single Crystals: Parity Forbidden Transitions and Their Application For Sensitive and Fast UV Photodetectors
ACS Photonics ( IF 6.5 ) Pub Date : 2017-11-07 00:00:00 , DOI: 10.1021/acsphotonics.7b00837
Jiajun Luo ₁ , Shunran Li ₁ , Haodi Wu ₁ , Ying Zhou ₁ , Yang Li ₁ , Jing Liu ₁ , Jinghui Li ₁ , Kanghua Li ₁ , Fei Yi ₂ , Guangda Niu ₁ , Jiang Tang ₁

Affiliation

Double perovskite Cs₂AgInCl₆ is newly reported as a stable and environmentally friendly alternative to lead halide perovskites. However, the fundamental properties of this material remain unexplored. Here, we first produced high-quality Cs₂AgInCl₆ single crystals (SCs) with a low trap density of 8.6 × 10⁸ cm^–3, even lower than the value reported in the best lead halide perovskite SCs. Through systematical optical and electronic characterization, we experimentally verified the existence of the proposed parity-forbidden transition in Cs₂AgInCl₆ and identified the role of oxygen in controlling its optical properties. Furthermore, sensitive (dectivity of ∼10¹² Jones), fast (3 dB bandwidth of 1035 Hz), and stable UV photodetectors were fabricated based on our Cs₂AgInCl₆ SCs, showcasing their advantages for optoelectronic applications.

中文翻译：

Cs ₂ AgInCl ₆双钙钛矿单晶：奇偶校验禁止的跃迁及其在灵敏和快速紫外光电探测器中的应用

据报道，双钙钛矿Cs ₂ AgInCl ₆是卤化钙钛矿铅的一种稳定且环保的替代品。但是，这种材料的基本性能仍未开发。在这里，我们首先生产了高质量的Cs ₂ AgInCl ₆单晶（SCs），其陷阱密度低至8.6×10 ⁸ cm ^–3，甚至低于最佳卤化钙钛矿铅SCs中报道的值。通过系统的光学和电子表征，我们实验验证了Cs ₂ AgInCl _6中提议的奇偶禁止跃迁的存在并确定了氧气在控制其光学性质中的作用。此外，基于我们的Cs ₂ AgInCl ₆ SC，制造了灵敏的（约^{10 12} Jones的绕射率），快速的（3 dB带宽1035 Hz）和稳定的UV光电探测器，展示了它们在光电应用中的优势。

更新日期：2017-11-08

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