本研究以室溫合成法進行全無機銫鉛溴鈣鈦礦量子點製備，並藉由結構分析與光學性質量測進行材料特性研究。由分析結果可知：以室溫合成法所製備的銫鉛溴鈣鈦礦量子點，其尺寸分佈均勻且螢光量子效率可達91.8 %。此外，藉由不同的鹵素前驅物與銫鉛溴鈣鈦礦量子點進行陰離子交換，可改變組成與激發光波長進而達到涵蓋整個可見光波段。而藉由陰離子交換所得的紅光量子點穩定性，根據研究結果顯示：以丙酮做為沉澱劑可有效提升紅光量子點的穩定性；此外，當紅光量子點放射光譜波長位於650 nm時，其穩定性優於放射光譜波長位於670 nm的紅光量子點，且保存於辛烷中比保存於甲苯中優異。而在表面配體的研究方面，減少紅光量子點表面的油胺，可減緩紅光量子點的衰退週期，在經過50天後紅光量子點仍可維持60 %以上的量子效率。在製程放大的研究方面，以批式放大製程進行銫鉛溴鈣鈦礦量子點的合成，會因為攪拌不易均勻而導致粒徑分布不佳，且量子效率會大幅度下降至66.9 %；而藉由連續式進料製程可得到粒徑分布均勻的銫鉛溴鈣鈦礦量子點，其中又以1.6 mL/min的流速最佳，所合成的銫鉛溴鈣鈦礦量子點量子效率具有83.9%。在本研究中，為了進一步提升銫鉛溴鈣鈦礦量子點的穩定性以應用於白光二極體轉換層，使用矽酸四甲酯在相對溼度65%的室溫環境下進行水解反應，完成以二氧化矽包覆銫鉛溴鈣鈦礦量子點。將二氧化矽包覆銫鉛溴鈣鈦礦量子點分散於水中可防止劣化機制進行並維持其發光性質。

In this study, all inorganic cesium lead bromide (CsPbBr3) perovskite quantum dots (QDs) were synthesized via room temperature process. The properties of CsPbBr3 QDs were analyzed by structural and optical measurement. From analysis results, we can know that the size distribution of room temperature prepared CsPbBr3 QDs is very uniform and the quantum yield (QY) can achieve 91.8 %. In addition, the composition emission wavelengths of perovskite QDs can adjust by anion exchange process. The emission wavelengths can cover the whole visible region. The stability of red emission QDs made by anion exchange process can be effectively improved by using acetone as precipitant. Besides, the stability of red emission QDs with 650 nm is superior to the red emission QDs with 670 nm. For storage issue, the stability of red emission QDs suspended in octane is better than that in toluene. We also studied the influence of ligand on the surfaces of QDs and observed that the emission quenching of red emission QDs can effectively reduce with low residual oleylamine on the surfaces of QDs. After 50 days, the QY can maintain 60% of the original value. For the massive production, we tried two kinds of methods, batch process and continuous flow process, to synthesize CsPbBr3 QDs. The QY of CsPbBr3 QDs synthesize by batch process would reduce to 66.9% due to non-uniformly stirring. However, the size distribution of CsPbBr3 QDs was uniform when continuous flow process was employed and the QY of CsPbBr3 QDs could achieve 83.9% when the flow rate was set as 1.6 mL/min. To improve the stability of CsPbBr3 QDs furthermore for using in white light converter layer, silicon oxide (SiOx) layer was formed as matrix to cover CsPbBr3 QDs by using tetramethyl orthosilicate (TMOS) under relative humidity of 65% and room temperature. SiOx covered CsPbBr3 QDs could be suspended in water to emission light without serious degradation.

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