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Exciton creation in LuAlO 3 single crystalline film
Author(s) -
Kolobanov Vitaly,
Mikhailin Vitaly,
Petrovnin Nikolai,
Spassky Dmitry,
Zorenko Yurij
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200642211
Subject(s) - exciton , substrate (aquarium) , absorption edge , absorption (acoustics) , reflectivity , materials science , band gap , epitaxy , enhanced data rates for gsm evolution , optics , analytical chemistry (journal) , chemistry , condensed matter physics , optoelectronics , physics , nanotechnology , telecommunications , oceanography , layer (electronics) , computer science , geology , chromatography
Single crystalline films (SCF) of LuAP attract attention because of the perspective of its application as 2D screens for X‐ray registration with high spatial resolution. An intensive sharp reflectivity peak at the edge of the fundamental absorption region with maximum at 8.37 eV at 10 K was found for a series of LuAP SCF grown by liquid phase epitaxy on YAP substrate. The dependence of the peak maximum and profile on temperature demonstrates its exciton origin. The absorption spectrum was calculated from reflectivity using Kramers–Kronig relations; the bandgap value was determined for LuAP as E g = 8.44 eV at 10 K. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)