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Patterning Multicolored Microdisk Laser Arrays of Cesium Lead Halide Perovskite
Xianxiong He1, Peng Liu2, Haihua Zhang3
1Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|January 24, 2017
Summary
Researchers developed a new method to create densely packed microdisk laser arrays. This technique allows for the fabrication of multicolored laser arrays emitting deep blue to green light.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Microdisk lasers (MDLs) are crucial for integrated photonics.
- Achieving densely packed arrays and multicolor emission remains challenging.
Purpose of the Study:
- To develop a method for fabricating densely packed CsPbCl3-xBrx microdisk laser arrays.
- To demonstrate the integration of multicolored MDL arrays with tunable emission.
Main Methods:
- Utilized a polydimethylsiloxane cylindrical-hole-template-confined solution-growth method.
- Employed gas-phase replacement of chlorine (Cl) by bromine (Br) in CsPbCl3 MDLs using HBr vapor for color tuning.
Main Results:
- Successfully fabricated densely packed CsPbCl3-xBrx microdisk laser arrays.
- Demonstrated simultaneous lasing in deep blue, blue, cyan, and green wavelengths from integrated arrays.
- Achieved multicolor emission through controlled halide exchange.
Conclusions:
- The developed solution-growth method is effective for fabricating high-quality microdisk laser arrays.
- Gas-phase halide exchange offers a viable strategy for achieving tunable multicolor emission in MDL arrays.
- This work paves the way for advanced photonic integrated circuits and optoelectronic devices.
