Application of NaYF4:Yb, Er upconversion fluorescence nanocrystals for solution-processed near infrared photodetectors

被引：41

作者：

Sun, Cheng-Jun

Xu, Zhihua

Hu, Bin

Yi, G. S.

Chow, G. M.

Shen, Jian ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci Div, Oak Ridge, TN 37831 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 19期

关键词：

D O I：

10.1063/1.2807841

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In an attempt to overcome the technical challenges in the conventional solution-processed near infrared (NIR) photodetectors, we have used NaYF4:Yb, Er upconversion fluorescence nanocrystals to replace the semiconductor quantum dots in conjugated polymers. Under NIR excitation, the NaYF4:Yb, Er nanocrystals emit visible light in the solution-processed NIR photodetectors. The emitted visible light is simultaneously absorbed by the host conjugated polymer to generate photocurrent, which indicates that our approach is applicable to fabricate NIR photodetectors while avoiding the major technical challenges associated with semiconductor quantum dot based NIR photodetectors.

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页数：3

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共 11 条

[1] Solution-processed pentacene quantum-dot polymeric nanocomposite for infrared photodetection [J].

Choudhury, Kaushik Roy ;

Kim, Won Jin ;

Sahoo, Yudhisthira ;

Lee, Kwang-Sup ;

Prasad, Paras N. .

APPLIED PHYSICS LETTERS, 2006, 89 (05)

[2] Efficient photoconductive devices at infrared wavelengths using quantum dot-polymer nanocomposites [J].

Choudhury, KR ;

Sahoo, Y ;

Ohulchanskyy, TY ;

Prasad, PN .

APPLIED PHYSICS LETTERS, 2005, 87 (07)

[3] Harvest of near infrared light in PbSe nanocrystal-polymer hybrid photovoltaic cells [J].

Cui, DH ;

Xu, J ;

Zhu, T ;

Paradee, G ;

Ashok, S ;

Gerhold, M .

APPLIED PHYSICS LETTERS, 2006, 88 (18)

[4] Cooperative upconversion and energy transfer of new high Er3+- and Yb3+-Er3+-doped phosphate glasses [J].

Hwang, BC ;

Jiang, SB ;

Luo, T ;

Watson, J ;

Sorbello, G ;

Peyghambarian, N .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2000, 17 (05) :833-839

[5] Ultrasensitive solution-cast quantum dot photodetectors [J].

Konstantatos, Gerasimos ;

Howard, Ian ;

Fischer, Armin ;

Hoogland, Sjoerd ;

Clifford, Jason ;

Klem, Ethan ;

Levina, Larissa ;

Sargent, Edward H. .

NATURE, 2006, 442 (7099) :180-183

[6] Solution-processed PbS quantum dot infrared photodetectors and photovoltaics [J].

McDonald, SA ;

Konstantatos, G ;

Zhang, SG ;

Cyr, PW ;

Klem, EJD ;

Levina, L ;

Sargent, EH .

NATURE MATERIALS, 2005, 4 (02) :138-142

[7] Photoconductivity from PbS-nanocrystal/semiconducting polymer composites for solution-processible, quantum-size tunable infrared photodetectors [J].

McDonald, SA ;

Cyr, PW ;

Levina, L ;

Sargent, EH .

APPLIED PHYSICS LETTERS, 2004, 85 (11) :2089-2091

[8] Application of NaYF4:Er3+ up-converting phosphors for enhanced near-infrared silicon solar cell response -: art. no. 013505 [J].

Shalav, A ;

Richards, BS ;

Trupke, T ;

Krämer, KW ;

Güdel, HU .

APPLIED PHYSICS LETTERS, 2005, 86 (01) :013505-1

[9] Absorption and emission spectroscopy in Er3+-Yb3+ doped aluminum oxide waveguides [J].

Strohhöfer, C ;

Polman, A .

OPTICAL MATERIALS, 2003, 21 (04) :705-712

[10] Synthesis, characterization, and biological application of size-controlled nanocrystalline NaYF4:Yb,Er infrared-to-visible up-conversion phosphors [J].

Yi, GS ;

Lu, HC ;

Zhao, SY ;

Yue, G ;

Yang, WJ ;

Chen, DP ;

Guo, LH .

NANO LETTERS, 2004, 4 (11) :2191-2196