التفاصيل البيبلوغرافية
| العنوان: |
Semi-transparent, high-performance lead-free Cs3Bi2I9 single crystal self-driven photodetector. |
| المؤلفون: |
Dong, Kailian1,2 (AUTHOR), Zhou, Hai3 (AUTHOR) hizhou@dgut.edu.cn, Xiao, Meng1 (AUTHOR), Gui, Pengbin1 (AUTHOR), Gao, Zheng1 (AUTHOR), Yao, Fang1 (AUTHOR), Shao, Wenlong1 (AUTHOR), Liu, Chenwei1 (AUTHOR), Tao, Chen1 (AUTHOR), Ke, Weijun1 (AUTHOR) weijun.ke@whu.edu.cn, Fang, Guojia1,2 (AUTHOR) gjfang@whu.edu.cn |
| المصدر: |
Applied Physics Letters. 5/9/2022, Vol. 120 Issue 19, p1-7. 7p. |
| مصطلحات موضوعية: |
*SINGLE crystals, *PHOTODETECTORS, *QUANTUM efficiency, *ABSORPTION coefficients, *LIGHT absorption, *SOLVENTS |
| مستخلص: |
All-inorganic Bi-based perovskites have attracted much attention due to their excellent stability, environmentally friendly, and low-cost solution processability. However, due to the large exciton binding energy and small light absorption coefficient, the performance of the Bi-based perovskite photodetector (PD) is far behind of the traditional Pb-based perovskite PDs. In this work, the lead-free all-inorganic Cs3Bi2I9 (CBI) perovskite single crystal was synthesized by a space-confined antisolvent-assisted crystallization method for high-performance, semi-transparent, and self-driven PDs with an ITO/SnO2/CBI/PTAA/Au/ITO structure. Electrical and optical properties of Au/ITO transparent electrode were studied considering its figure of merit and device quantum efficiency through optimizing the Au thickness. Finally, our optimized semi-transparent device showed excellent self-driven performance with a large on/off ratio of ∼5700, a high responsivity of 52.06 mA/W, a high detectivity of >1012 Jones, and a large linear dynamic range of up to 140.7 dB. In addition, our device demonstrated excellent characteristics to the weak light detection and the long-term stability. The Au/ITO electrode was adopted and tailored to balance the device performance and transparency, which provides a good route for developing high-performance and transparent devices in the future. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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