研究目的
Investigating the excellent exciton luminescence of CsPbI3 red quantum dots in borate glass.
研究成果
The fabricated CsPbI3 QDs glasses show excellent exciton emission characteristics, especially high PLQY, which is hoped to apply in optoelectronic devices.
研究不足
The decrease of PL intensity with temperature needs to be improved for display and lighting applications. The irregular shape of QDs glass samples can increase the uncertainty for PLQY measurement.
1:Experimental Design and Method Selection:
The CsPbI3 QDs were prepared in a nominal molar ratio of 4% to the glass host using melt quenching and two-step heat treatment.
2:Sample Selection and Data Sources:
Three representative samples A, B, and C were prepared with different treatment conditions.
3:List of Experimental Equipment and Materials:
High purity Li2CO3, Na2CO3, K2CO3, ZnO, BaCO3, SrCO3, Sb2O3, B2O3 powders, Cs2CO3, PbI2, and KI were used as raw materials.
4:Experimental Procedures and Operational Workflow:
The raw materials were mixed and melted at 1100oC for 10min, then poured onto a metal mold. Two-step heat treatment was carried out for samples B and C.
5:Data Analysis Methods:
UV-Vis-NIR transmittance and absorption spectra were measured by Shimazu UV-3600. PL spectra, PLE spectra, and PLQY were measured by Edinburgh spectrofluorometer FS5. PL decay was measured by Edinburgh spectrofluorometer FLS1000.
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