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Published on: February 27, 2017
Growth window optimization for large-size quasi-two-dimensional Dion-Jacobson type perovskites
Yinghao Fan1, Hang Yin2, Xinyi Li1
1Engineering Research Center of Nano-Geomaterials of the Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China. gaoyt@cug.edu.cn.
Large single crystals of quasi-2D DJ type perovskites were synthesized for improved X-ray detection. This breakthrough addresses phase segregation and crystal size issues, paving the way for advanced perovskite-based detectors.
Area of Science:
- Materials Science
- Solid-State Physics
- Crystallography
Background:
- Quasi-2D DJ type perovskites show promise for X-ray detection.
- Challenges include phase segregation and limited crystal size, hindering performance.
Purpose of the Study:
- Synthesize large single crystals of quasi-2D DJ type perovskite, specifically (3AMPY)(MA)Pb2Br7.
- To overcome limitations in crystal growth for enhanced X-ray detector applications.
Main Methods:
- Employed temperature-controlled crystallization techniques.
- Focused on synthesizing large single crystals of (3AMPY)(MA)Pb2Br7.
Main Results:
- Achieved high resistivity (1.78 × 10^9 Ω cm).
- Obtained a significant carrier mobility-lifetime (μτ) product of 9.32 × 10^-4 cm^2 V^-1.
- Demonstrated low dark current (5.6 × 10^-8 A cm^-2 V^-1) and high sensitivity (129.86 μC Gy^-1 cm^-2).
Conclusions:
- Successfully synthesized large single crystals of quasi-2D DJ type perovskite.
- The developed material exhibits excellent properties for high-performance X-ray detection.
- Findings offer insights for optimizing crystal growth in perovskite optoelectronics.
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