Colloidal quantum-dot-based silica gel glass: two-photon absorption, emission, and quenching mechanism

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 中科院强激光材料重点实验室

	Colloidal quantum-dot-based silica gel glass: two-photon absorption, emission, and quenching mechanism
	Zhang, Saifeng; Wang, Jun; Zhang, Long; Li, Jingzhou; Dong, Hongxing; Ma, Yunfei
刊名	Nanoscale
	2016
卷号	8 期号:36 页码:16440
通讯作者	hongxingd@siom.ac.cn ; lzhang@siom.ac.cn
英文摘要	Two-photon (TP) three-dimensional solid matrices have potential applications in high density optical data reading and storage, infrared-pumped visible displays, lasers, etc. Such technologies will benefit greatly from the advantageous properties of TP materials including tunable emission wavelength, photostability, and simple chemical processing. Here, this ideal TP solid is made possible by using a facile sol-gel process to engineer colloid quantum dots into silica gel glass. Characterization using an open-aperture Z-scan technique shows that the solid matrices exhibited significant TP optical properties with a TP absorption coefficient of (9.41 +/- 0.39) x 10(-2) cm GW(-1) and a third-order nonlinear figure of merit of (7.30 +/- 0.30) x 10(-14) esu cm. In addition, the dependence of the TP properties on high-temperature thermal treatment is studied in detail to obtain a clear insight for practical applications. The results illustrate that the sample can maintain stable TP performance below the synthesis temperature of the CdTe/CdS colloidal quantum dots. Furthermore, the mechanisms for thermal quenching of photoluminescence under different temperature regimes are clarified as a function of the composition.
收录类别	SCI
资助信息	NSFC [61378074, 61475173, 61308034]; Shanghai Rising-star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences; Shanghai Science and Technology Committee [14PJ1401200]
WOS记录号	WOS:000384531600039
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/28033]
专题	上海光学精密机械研究所_中科院强激光材料重点实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Zhang, Saifeng,Wang, Jun,Zhang, Long,et al. Colloidal quantum-dot-based silica gel glass: two-photon absorption, emission, and quenching mechanism[J]. Nanoscale,2016,8(36):16440.
APA	Zhang, Saifeng,Wang, Jun,Zhang, Long,Li, Jingzhou,Dong, Hongxing,&Ma, Yunfei.(2016).Colloidal quantum-dot-based silica gel glass: two-photon absorption, emission, and quenching mechanism.Nanoscale,8(36),16440.
MLA	Zhang, Saifeng,et al."Colloidal quantum-dot-based silica gel glass: two-photon absorption, emission, and quenching mechanism".Nanoscale 8.36(2016):16440.