Photopatterned semiconductor nanocrystals and their electroluminescence from hybrid light-emitting devices |
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Authors: | Jun Shinae Jang Eunjoo Park Jongjin Kim Jongmin |
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Institution: | Materials Laboratory, Samsung Advanced Institute of Technology, Mt.14-1, Nongseo-Ri, Giheung-Eup, Yongin-Si, Gyeonggi-Do, 449-712, Korea. |
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Abstract: | We demonstrate the ability to use a photolithographic method to make patterned nanocrystal film for device applications. Exposing a nanocrystal film to strong UV light allowed the oleic acid ligands on the surface of the nanocrystals to form an insoluble cross-linked network while the unexposed areas were still soluble to toluene solvent. Therefore, the UV light exposure through a shadow mask followed by solvent rinsing produced a small feature size on the order of 2 mum. We also report that the integrated nanocrystal patterns in an organic light-emitting diode show clear electroluminescence from the nanocrystals. |
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