Abstract
In an attempt to overcome the technical challenges in the conventional solution-processed near infrared (NIR) photodetectors, we have used NaY F4: Yb, Er upconversion fluorescence nanocrystals to replace the semiconductor quantum dots in conjugated polymers. Under NIR excitation, the NaY F4: 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.
| Original language | English (US) |
|---|---|
| Article number | 191113 |
| Journal | Applied Physics Letters |
| Volume | 91 |
| Issue number | 19 |
| DOIs | |
| State | Published - Nov 19 2007 |
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Application of NaYF4 : Yb, Er upconversion fluorescence nanocrystals for solution-processed near infrared photodetectors. / Sun, Cheng Jun; Xu, Zhihua; Hu, Bin; Yi, G. S.; Chow, G. M.; Shen, Jian.
In: Applied Physics Letters, Vol. 91, No. 19, 191113, 19.11.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Application of NaYF4
T2 - Yb, Er upconversion fluorescence nanocrystals for solution-processed near infrared photodetectors
AU - Sun, Cheng Jun
AU - Xu, Zhihua
AU - Hu, Bin
AU - Yi, G. S.
AU - Chow, G. M.
AU - Shen, Jian
PY - 2007/11/19
Y1 - 2007/11/19
N2 - In an attempt to overcome the technical challenges in the conventional solution-processed near infrared (NIR) photodetectors, we have used NaY F4: Yb, Er upconversion fluorescence nanocrystals to replace the semiconductor quantum dots in conjugated polymers. Under NIR excitation, the NaY F4: 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.
AB - In an attempt to overcome the technical challenges in the conventional solution-processed near infrared (NIR) photodetectors, we have used NaY F4: Yb, Er upconversion fluorescence nanocrystals to replace the semiconductor quantum dots in conjugated polymers. Under NIR excitation, the NaY F4: 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.
UR - http://www.scopus.com/inward/record.url?scp=36048986334&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=36048986334&partnerID=8YFLogxK
U2 - 10.1063/1.2807841
DO - 10.1063/1.2807841
M3 - Article
VL - 91
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 19
M1 - 191113
ER -