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• Willander, M
• Nur, O
• Sadaf, J
• Qadir, M
• Zaman, S
• Zainelabdin, A
• Bano, N
• Hussain, I
• [+] on Google Scholar
• Willander, M
• Nur, O
• Sadaf, J
• Qadir, M
• Zaman, S
• Zainelabdin, A
• Bano, N
• Hussain, I
• [+] on PubMed
• Willander, M
• Nur, O
• Sadaf, J
• Qadir, M
• Zaman, S
• Zainelabdin, A
• Bano, N
• Hussain, I

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Materials 2010, 3(4), 2643-2667; doi:10.3390/ma3042643

Review

Luminescence from Zinc Oxide Nanostructures and Polymers and their Hybrid Devices

Magnus Willander* , Omer Nur, Jamil Rana Sadaf, Muhammad Israr Qadir, Saima Zaman, Ahmed Zainelabdin, Nargis Bano and Ijaz Hussain

Department of Science and Technology (ITN), Campus Norrköping, Linköping University, SE 60174 Norrköping, Sweden

* Author to whom correspondence should be addressed.

Received: 4 January 2010; in revised form: 15 March 2010 / Accepted: 31 March 2010 / Published: 12 April 2010

(This article belongs to the Special Issue Luminescent Materials)

Download PDF Full-Text [1626 KB, uploaded 12 April 2010 08:44 CEST]

Abstract: Zinc oxide (ZnO) is a strong luminescent material, as are several polymers. These two materials have distinct drawbacks and advantages, and they can be combined to form nanostructures with many important applications, e.g., large-area white lighting. This paper discusses the origin of visible emission centers in ZnO nanorods grown with different approaches. White light emitting diodes (LEDs) were fabricated by combining n-ZnO nanorods and hollow nanotubes with different p-type materials to form heterojunctions. The p-type component of the hybrids includes p-SiC, p-GaN, and polymers. We conclude by analyzing the electroluminescence of the different light emitting diodes we fabricated. The observed optical, electrical, and electro-optical characteristics of these LEDs are discussed with an emphasis on the deep level centers that cause the emission.

Keywords: ZnO nanostructures; deep center luminescence; light emitting diodes; hybrid technology

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