Xu, Jian and Liu, Justin and Cui, Dehu and Gerhold, Michael and Wang, Andrew Y. and Nagel, Matthias and Lippert, Thomas K. (2007) Laser-assisted forward transfer of multi-spectral nanocrystal quantum dot emitters. NANOTECHNOLOGY, 18 (2). ISSN 0957-4484 (Print); 1361-6528 (Online)
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Official URL: http://www.iop.org/EJ/abstract/0957-4484/18/2/0254...
We report in this paper the development of a novel laser-transfer scheme to integrate laterally arrays of light-emitting pixels made of semiconductor nanocrystal quantum dots (NQDs). The nanocrystal composition and size can be tailored such that the luminescence emission of the quantum dots in each device pixel constitutes a distinctive spectral channel of narrow bandwidth. An ultrathin film of photosensitive triazene polymer (TP) has been employed as the sacrificial layer whose decomposition upon UV excitation delivers the bilayer structure of nanocrystal and metal films to the substrates. The ejected plume of the decomposed photosensitive polymer produces a thrust force to ensure the conformal contacts between the NQD layer and the bottom hole transport layer. A 6 x 6 red and yellow matrix with pixel sizes of 800 mu m is demonstrated. This technique opens up the possibility of developing small, on-chip light sources featured with multiple wavelength channels over a desired spectral range as well as the flexible substratum.
|Subjects:||Physical Science > Quantum phenomena|
Physical Science > Photonics
|Deposited By:||M T V|
|Deposited On:||22 Dec 2008 15:28|
|Last Modified:||22 Dec 2008 15:28|
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