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Quantum Dots: Bandgap Tuning with Thermal Residual Stresses Induced in a Quantum Dot (Small 18/2014)
Author(s) -
Kong EuiHyun,
Joo SooHyun,
Park HyunJin,
Song Seungwoo,
Chang YongJune,
Kim Hyoung Seop,
Jang Hyun Myung
Publication year - 2014
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201470111
Subject(s) - quantum dot , band gap , materials science , optoelectronics , residual , lattice (music) , nanotechnology , wide bandgap semiconductor , condensed matter physics , physics , computer science , algorithm , acoustics
A novel way of tuning the bandgap in a quantum dot (QD) is by lattice distortions, using 4 nm CdS QDs grown on a TiO 2 particle for example. The bandgap tuning (from 2.74 eV to 2.49 eV) of a CdS QD is achieved by H. M. Jang and co‐workers by suitably adjusting the degree of lattice distortion in the QD via manipulation of the tensile residual stresses. As reported on page 3678, the present methodology will potentially pave a way to explore quantum effects in various QD‐based applications.