研究目的
Investigating the hybrid package method to improve the lifetime of colloidal quantum dot optoelectronic materials.
研究成果
Several methods to package CQD materials into standard photonic devices can shield them from external erosion factors like water and oxygen, achieving lifetimes of several tens of thousands of hours. These experiments are essential for the commercialization of CQDs in next-generation solid-state lighting.
研究不足
The temperature suitable for CQDs is usually quite low, limiting the sealing process with PDMS. PMMA, while good for semiconductor processes, may not be optimal due to subsequent thermal processes affecting CQD application.
1：Experimental Design and Method Selection:
The study reviews hybrid package methods for colloidal quantum dots (CQDs) to improve their reliability. Methods include core-shell structure, polymer matrix embedding, and isolation layer application.
2：Sample Selection and Data Sources:
CQDs are embedded in sodium chloride and buried in PDMS film for on-shelf tests. Continuous testing involves high and low-stressed conditions with photon intensity settings.
3：List of Experimental Equipment and Materials:
Includes PMMA, PDMS, sodium chloride, and standard 5070 type lead frames.
4：Experimental Procedures and Operational Workflow:
On-shelf aging and continuous stressed aging processes are used to evaluate CQD layer lifetime. Photoluminescence (PL) systems measure emission efficiency over time.
5：Data Analysis Methods:
Photon conversion efficiency (PCE) is calculated to determine device failure points, with LT50 standard applied.
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