Citric acid-assisted growth of lanthanide ions co-doped one-dimensional upconversion microcrystals and their photovoltaic applications

被引：4

作者：

Cheng, Rui ^{[1
]}

Chen, Yanrui ^{[1
]}

Li, Zhiqiang ^{[1
]}

Chen, Xiaohong ^{[1
]}

Yang, Pingxiong ^{[2
]}

Zhu, Hongbing ^{[3
]}

Huang, Yuelong ^{[3
]}

Sun, Zhuo ^{[1
]}

Huang, Sumei ^{[1
]}

机构：

[1] E China Normal Univ, Dept Phys, Engn Res Ctr Nanophoton & Adv Instrument, Minist Educ, Shanghai 200062, Peoples R China

[2] E China Normal Univ, Dept Elect Engn, Key Lab Polar Mat & Devices, Shanghai 200062, Peoples R China

[3] Baoding Tianwei Solar Films Co LTD, State High Tech Ind Dev Zone, Baoding, Hebei, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2014年 / 25卷 / 09期

基金：

中国国家自然科学基金;

关键词：

HYDROTHERMAL SYNTHESIS; NANOCRYSTALS; LUMINESCENCE; NAYF4-YB; ER; EXCITATION; MORPHOLOGY; EFFICIENCY; EMISSIONS; NAGDF4; ER3+;

D O I：

10.1007/s10854-014-2130-9

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report for the first time the preparation of Yb3+-Er3+ co-doped beta-phase sodium gadolinium fluoride (NaGdF4:Yb/Er) microcrystals using citric acid (CA) as a shape modifier and the application of NaGdF4:Yb/Er to amorphous silicon solar cells. The proposed hydrothermal method was facile and eco-friendly. It was found that CA played a critical role in the shape evolution of the final products. The related synthesis mechanisms are discussed. Under 980 nm laser excitation, the optimized NaGdF4:Yb/Er crystals exhibited strong upconversion (UC) emissions at visible wavelengths. Amorphous silicon thin film solar cells were designed and fabricated for investigating different UC configurations. In combination with a metallic back reflector, the cell with the front side UC layer achieved a six-fold improvement of the photocurrent while the cell with the rear side UC layer exhibited a ten-fold enhancement of the photocurrent, under 980 nm light, compared with the cell without upconverter.

引用

页码：4066 / 4073

页数：8

共 30 条

[1] Visible light emission upon near-infrared excitation in a transparent solution of nanocrystalline β-NaGdF4:Yb3+, Er3+ [J].