Synthesis of highly efficient azure-to-blue-emitting Zn-Cu-Ga-S quantum dots
Bu-Yong Kim1, Jong-Hoon Kim1, Ki-Heon Lee1
1Department of Materials Science and Engineering, Hongik University, Seoul 121-791, Republic of Korea. hyang@hongik.ac.kr.
Chemical Communications (Cambridge, England)
|March 29, 2017
Abstract:
To realize blue emission-capable non-Cd I-III-VI quantum dots (QDs), we explore the synthesis of ternary Cu-Ga-S (CGS) QDs and subsequent quaternary Zn-Cu-Ga-S (ZCGS) via Zn alloying into a CGS host. The resulting ZCGS/ZnS core/shell QDs possess not only Zn content-dependent tunable emissions in the azure-to-blue range but also exceptional quantum yields of 78-83%.
