Research output: Contribution to journal › Article › peer-review
Optical properties of InN with stoichoimetry violation and indium clustering. / Shubina, T. V.; Ivanov, S. V.; Jmerik, V. N.; Glazov, M. M.; Kalvarskii, A. P.; Tkachman, M. G.; Vasson, A.; Leymarie, J.; Kavokin, A.; Amano, H.; Akasaki, I.; Butcher, K. S.A.; Guo, Q.; Monemar, B.; Kop'ev, P. S.
In: Physica Status Solidi (A) Applications and Materials Science, Vol. 202, No. 3, 01.02.2005, p. 377-382.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Optical properties of InN with stoichoimetry violation and indium clustering
AU - Shubina, T. V.
AU - Ivanov, S. V.
AU - Jmerik, V. N.
AU - Glazov, M. M.
AU - Kalvarskii, A. P.
AU - Tkachman, M. G.
AU - Vasson, A.
AU - Leymarie, J.
AU - Kavokin, A.
AU - Amano, H.
AU - Akasaki, I.
AU - Butcher, K. S.A.
AU - Guo, Q.
AU - Monemar, B.
AU - Kop'ev, P. S.
PY - 2005/2/1
Y1 - 2005/2/1
N2 - We demonstrate that nonstoichiometry is one of the main reason of strong deviation of the InN optical gap in the 0.7-2 eV range, with N/In 〈1 and N/In〉 1 corresponding to the lower and higher energies, respectively. The phenomenon is discussed in terms of atomic orbital energies, which are strongly different for indium and nitrogen, therefore both excess atom incorporation and elimination could change the optical gap. We estimate such trends using the approximation of the empirical nearest-neighbor tight binding theory. It is also demonstrated that resonant absorption in In-enriched regions is an additional factor lowering an effective absorption edge.
AB - We demonstrate that nonstoichiometry is one of the main reason of strong deviation of the InN optical gap in the 0.7-2 eV range, with N/In 〈1 and N/In〉 1 corresponding to the lower and higher energies, respectively. The phenomenon is discussed in terms of atomic orbital energies, which are strongly different for indium and nitrogen, therefore both excess atom incorporation and elimination could change the optical gap. We estimate such trends using the approximation of the empirical nearest-neighbor tight binding theory. It is also demonstrated that resonant absorption in In-enriched regions is an additional factor lowering an effective absorption edge.
UR - http://www.scopus.com/inward/record.url?scp=20644469751&partnerID=8YFLogxK
U2 - 10.1002/pssa.200460321
DO - 10.1002/pssa.200460321
M3 - Article
AN - SCOPUS:20644469751
VL - 202
SP - 377
EP - 382
JO - Physica Status Solidi (A) Applications and Materials Science
JF - Physica Status Solidi (A) Applications and Materials Science
SN - 1862-6300
IS - 3
ER -
ID: 36659028