Abstract
Upconversion is a nonlinear process in which two, or more, long wavelength photons are converted to a shorter wavelength photon. It holds great promise for bioimaging, enabling spatially resolved imaging in a scattering specimen and for photovoltaic devices as a means to surpass the Shockley-Queisser efficiency limit. Here, we present dual near-infrared and visible emitting PbSe/CdSe/CdS nanocrystals able to upconvert a broad range of NIR wavelengths to visible emission at room temperature. The synthesis is a three-step process, which enables versatility and tunability of both the visible emission color and the NIR absorption edge. Using this method, one can achieve a range of desired upconverted emission peak positions with a suitable NIR band gap.
| Original language | English |
|---|---|
| Pages (from-to) | 446-452 |
| Number of pages | 7 |
| Journal | ACS Nano |
| Volume | 10 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 26 2016 |
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Keywords
- Interband absorption
- Intraband absorption
- Near-infrared
- Quantum dot-quantum well
- Semiconductor nanocrystals
- Upconversion
ASJC Scopus subject areas
- Materials Science(all)
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Broadband near-infrared to visible upconversion in quantum dot-quantum well heterostructures. / Teitelboim, Ayelet; Oron, Dan.
In: ACS Nano, Vol. 10, No. 1, 26.01.2016, p. 446-452.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Broadband near-infrared to visible upconversion in quantum dot-quantum well heterostructures
AU - Teitelboim, Ayelet
AU - Oron, Dan
PY - 2016/1/26
Y1 - 2016/1/26
N2 - Upconversion is a nonlinear process in which two, or more, long wavelength photons are converted to a shorter wavelength photon. It holds great promise for bioimaging, enabling spatially resolved imaging in a scattering specimen and for photovoltaic devices as a means to surpass the Shockley-Queisser efficiency limit. Here, we present dual near-infrared and visible emitting PbSe/CdSe/CdS nanocrystals able to upconvert a broad range of NIR wavelengths to visible emission at room temperature. The synthesis is a three-step process, which enables versatility and tunability of both the visible emission color and the NIR absorption edge. Using this method, one can achieve a range of desired upconverted emission peak positions with a suitable NIR band gap.
AB - Upconversion is a nonlinear process in which two, or more, long wavelength photons are converted to a shorter wavelength photon. It holds great promise for bioimaging, enabling spatially resolved imaging in a scattering specimen and for photovoltaic devices as a means to surpass the Shockley-Queisser efficiency limit. Here, we present dual near-infrared and visible emitting PbSe/CdSe/CdS nanocrystals able to upconvert a broad range of NIR wavelengths to visible emission at room temperature. The synthesis is a three-step process, which enables versatility and tunability of both the visible emission color and the NIR absorption edge. Using this method, one can achieve a range of desired upconverted emission peak positions with a suitable NIR band gap.
KW - Interband absorption
KW - Intraband absorption
KW - Near-infrared
KW - Quantum dot-quantum well
KW - Semiconductor nanocrystals
KW - Upconversion
UR - http://www.scopus.com/inward/record.url?scp=84991794193&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84991794193&partnerID=8YFLogxK
U2 - 10.1021/acsnano.5b05329
DO - 10.1021/acsnano.5b05329
M3 - Article
AN - SCOPUS:84991794193
VL - 10
SP - 446
EP - 452
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 1
ER -