研究目的
Investigating the multi-wavelength lasing capabilities of colloidal quantum dot (CQD) lasers in distributed feedback cavities using complex grating structures and flexible substrates.
研究成果
Multi-wavelength CQD lasers were successfully prepared using complex grating structures and flexible substrates, demonstrating tunable emission wavelengths through mechanical flexibility and grating period adjustments.
研究不足
The study focuses on the fabrication and performance of CQD lasers in DFB cavities but does not extensively explore the scalability or integration of these lasers into practical devices.
1:Experimental Design and Method Selection:
The study employs interference lithography to fabricate grating structures for distributed feedback (DFB) cavities and spin coating to deposit CQD films.
2:Sample Selection and Data Sources:
CdSe/CdS/ZnS core/shell/shell CQDs are used as active materials.
3:List of Experimental Equipment and Materials:
Includes a femtosecond laser, spectrometer, photoresist, and PET substrates.
4:Experimental Procedures and Operational Workflow:
Involves spin coating PR on substrates, exposure to interference patterns, development, and spin coating CQD solution on grating structures.
5:Data Analysis Methods:
Emission spectra and lasing performance are analyzed using optical characterization techniques.
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