摘要 鈣鈦礦系材料具有製程簡便、材料調控多樣性、吸收及激發光譜坐落在可見光波段…等特性，近年來被科學界廣泛的討論在太陽能電池、光致發光以及電致發光等領域應用之可能性。由於鈣鈦礦系量子點(PeQDs)材料具有體積小、毒性低、效率高且其在可見光波段發光色純度高的優點，所以未來極有可能被應用在微型化發光二極體(Micro LEDs)以及量子點顯示器(QLED TV)的領域。 現今學術界對於PeQDs的研究方興未艾，從相關的研究可以歸納出在PeQDs領域中如何利用適當的配體來穩定PeQDs的發光效率並且避免其團聚是重要的課題。在本計畫的研究規劃中將依目前團隊研究經驗進行研究改進，期能製作出高效率、高穩定性之鈣鈦礦系材料與製程並將其應用在綠光鈦礦量子點擴散膜(PeQDs Diffuser Film, PeDF)，提升我國在此領域之競爭力。 本研究計畫設計從材料的本質出發，利用不同比例配位劑與封頭劑對PeQDs表面進行改質以提升其穩定性，然後將其穩定固著在SiO2 球之上作為擴散粒子。最後將此擴散粒子應用在擴散膜之中，製造出高效率、高穩定性之PeDF。 本計畫擬進行兩個主題研究： (1)在避免載體過度團聚方面，結合螯合劑(APTES)與封頭劑(MOTMS)使用讓CsPbBr3 QDs穩定鑲嵌在SiO2球表面且避免SiO2球團聚。(2)在提升PeDF的光均勻性與效率方面，提出利用自組裝技術製造類桑葚形貌之SiO2球來達成。此類桑葚形貌SiO2球由於是由次微米級的SiO2團聚變大成為微米等級，因此同時具有高比表面積以及高米氏散射的優點，將有助於PeDF光均勻度以及效率的提升。 LEDs以及TFT-LCD顯示器為我國兩個極為重要的產業，為了因應日本以及韓國在此領域新產品以及新應用的威脅，研發高效能之新材料實為重要之議題，本研究開發之高效率、高穩定性新式PeDF，未來成果可應用於Micro LEDs以及QLEDs等領域，有助於提升我國相關產業的競爭力。 ;Perovskite quantum dots (PeQDs) with the advantages of inexpensive process and tunable wavelength over the completely visible spectral range, have received increasing attention in recent years. Given these advantages, the scientific community has extensively discussed the possibility of applications in the fields of solar cells, photoluminescence and electroluminescence. In this work, we propose the use of material surface modification and self-assembly techniques to fabricate the new perovskite quantum dots diffuser Film (PeDF). This new PeDF with the advantages of high efficiency and high purity of luminescent color, are very likely to be used in the field of micro LEDs and QLED TV in the future.We aim to develop two thematic studies in this project:(1) In terms of avoiding excessive agglomeration of the SiO2 spheres, APTES and MOTMS is using as ligand to synthesize and avoid agglomeration of PeQDs @ SiO2 spheres.(2) To improve the light uniformity and efficiency of PeDF. We proposed to fabricate SiO2 spheres with a mulberry-like shape via the self-assembly technology. Such mulberry-shaped SiO2 spheres are aggregated from sub-um-sized spheres to um-sized spheres, so they have the advantages of high specific surface area and high Mie scattering, which might enhance the efficiency and uniformity of PeDF.TFT-LCD displays and LEDs are two of the very important industries in Taiwan. In order to respond to the threats of new products and new applications in this field from Japan, South Korea and China, study and development of new products with high performance are very important topics for us. The results of this study might be applied to Micro LEDs and TFT-LCD displays and other fields, to increase the competitiveness of Taiwan.
