Color Temperature Tuning and Control of Trichromatic White Light Emission from a Multisegment ZnCdSSe Heterostructure Nanosheet
     
Yazarlar (3)
Prof. Dr. Sunay TÜRKDOĞAN Yalova Üniversitesi, Türkiye
Fan Fan Ira A. Fulton Schools Of Engineering, Amerika Birleşik Devletleri
Cun Zheng Nıng Ira A. Fulton Schools Of Engineering, Amerika Birleşik Devletleri
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Advanced Functional Materials
Dergi ISSN 1616-301X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 10-2016
Cilt / Sayı / Sayfa 26 / 46 / 8521–8526 DOI 10.1002/adfm.201603620
Makale Linki http://onlinelibrary.wiley.com/doi/10.1002/adfm.201603620/full
Özet
Tuning and control of color temperature of trichromatic white light emission is demonstrated for the first time from a single ZnCdSSe nanosheet realized by a novel growth method using chemical vapor deposition (CVD). The nanosheets have thicknesses in the range of 60–350 nm and lateral dimensions of tens of micrometers. These nanosheet structures with three or more parallel segments are able to emit the three primary colors of light from a monolithic body and the combination of the emitted light appears as white. Due to temperature dependence of the alloy composition and the spatial profile of the temperature in the CVD chamber, alloy compositions and the widths of individual segments can be controlled by the substrate locations and the growth time, respectively. Such control determines the emission color and relative intensity of each segment, thus resulting in the tuning of the color temperature of the white light, or in the realization of any visible colors. Trichromatic white light emission is demonstrated with the correlated color temperature covering an extensive range from 2700 to 14 400 K using various growth parameters. In addition, a dynamic tuning of colors and color temperature is demonstrated by sweeping a pump beam across a single nanosheet.
Anahtar Kelimeler
bandgap engineering | multicolor emission | nanosheets | solid state lighting (SSL) | tunable white light