Facility Agriculture: Energy Saving and Sterilization【Department of Applied Materials Optoelectronic Engineering, National Chi Nan University / Wuu, Dong-Sing / President / Professor】
設施農業：節能栽培與滅菌【國立暨南國際大學應用材料及光電工程學系/國立中興大學材料科學與工程學系/武東星 校長/客座教授】
論文篇名 英文：Improved Characteristics of CdSe/CdS/ZnS Core-Shell Quantum Dots Using an Oleylamine-Modified Process
中文：油胺改性之CdSe/CdS/ZnS核殼量子點的特性
期刊名稱 NANOMATERIALS
發表年份,卷數,起迄頁數 2022, 12, 909
作者 Chang, Kai-Ping; Yeh, Yu-Cheng; Wu, Chung-Jui; Yen, Chao-Chun; Wuu, Dong-Sing(武東星)*
DOI 10.3390/nano12060909
中文摘要 採用一鍋法合成了不同油胺含量的含ZnS/ZnO殼層量子點的CdSe/CdS。用x射線繞射分析了量子點的晶體結構，發現了ZnS繞射峰。結果表明，在CdSe/CdS核表面形成了ZnS殼層。有趣的是，高OLA濃度的量子點表現出ZnS/ZnO的繞射峰。結果表明，ZnS/ZnO殼層量子點的熱穩定性優於ZnS殼層量子點。此外，在85 /85%相對濕度老化500 h時，ZnS/ZnO殼層量子點的光致發光強度衰減較慢，為7.1%，表明不同OLA修飾的量子點可以形成ZnS/ZnO殼層，在惡劣環境中具有良好的穩定性。量子點的發射波長可調至505 ~ 610 nm，適合微型LED顯示應用。
英文摘要 CdSe/CdS with ZnS/ZnO shell quantum dots (QDs) are synthesized by a one-pot method with various oleylamine (OLA) contents. The crystal structures of the QDs were analyzed by X-ray diffractometry, which showed ZnS diffraction peaks. It was represented that the ZnS shell was formed on the surface of the CdSe/CdS core. Interestingly, QDs with a high OLA concentration exhibit diffraction peaks of ZnS/ZnO. As a result, the thermal stability of QDs with ZnS/ZnO shells exhibit better performance than those with ZnS shell. In addition, the photoluminescence intensity of QDs with ZnS/ZnO shell shows a relatively slow decay of 7.1% compared with ZnS shell at 85 ℃ /85% relative humidity aging test for 500 h. These indicate that QDs with different OLA modifications can form ZnS/ZnO shells and have good stability in a harsh environment. The emission wavelength of QDs can be tuned from 505 to 610 nm, suitable for micro-LED display applications.
發表成果與本中心研究主題相關性 針對全彩 LED 提出改善方案，包括合成不同顏色之量子點，作為色轉換層，可應用於農業栽培之高效率光源。