Kumar, Praveen and Devi, Pooja and Soto Rodriguez, P. E. D. and Jain, Rishabh and Jaggi, Neena and Sinha, R. K. and Kumar, Mahesh (2018) Structural, optical and Carrier dynamics of self-assembled InGaN nanocolumns on Si(111). Superlattices and Microstructures , 117. pp. 25-30. ISSN 0749-6036

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Abstract

We investigated the morphological, structural, optical, electrical and carrier relaxation dynamic changes on the self-assembled grown InGaN nanocolumns (NCs) directly on pSi(111) substrate at two different substrate temperature, namely 580 degrees C (A) and 500 C (B). The emission wavelength of comparably low temperature (LT) grown NCs was red-shifted from 3.2eV to 2.4eV. First observations on the charge carrier dynamics of these directly grown NCs show comparable broad excited state absorption (ESA) for LT gown NCs, which manifest bi-exponential decay due to the radiative defects generated during the coalescence of these NCs.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	23 Aug 2019 08:31
Last Modified:	23 Aug 2019 08:31
URI:	http://npl.csircentral.net/id/eprint/3966

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