Low-temperature time-resolved vacuum ultraviolet luminescent spectroscopy of KH2PO4 crystals with defects / Ogorodnikov IN,Pustovarov VA,Shul'gin BV,Kuanyshev VT,Satybaldieva MK // OPTICS AND SPECTROSCOPY. - 2001. - V. 91, l. 2. - P. 224-231.

ISSN/EISSN:

0030-400X / нет данных

Type:

Article

Abstract:

Low-temperature photoluminescence (PL) of unactivated KDP crystals under selective synchrotron excitation is for the first time measured with subnanosecond time resolution. Time-resolved PL (2-6 eV) and PL excitation (4-35 eV) spectra, as well as PL kinetics, are measured at 7 K. From the acquired experimental data, luminescent bands related to intrinsic defects of the KDP lattice are identified; in particular, the long-wave band at 2.6 eV is assigned to L defects, and the band at 3.5-3.6 eV is attributed to D defects. An efficient energy transfer over the hydrogen sublattice is shown to take place in KDP at low temperatures. It results in the efficient excitation of L and D center photoluminescence in the fundamental absorption region, at electron transitions to the bottom levels of the conduction band, corresponding to the states of the hydrogen atom. The band gap E-g is evaluated to be 8.0-8.8 eV. (C) 2001 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

POTASSIUM DIHYDROGEN PHOSPHATE; IRRADIATED KH2PO4; ABSORPTION; RADIATION; CENTERS; GROWTH; KDP

DOI:

10.1134/1.1397843

Web of Science ID:

ISI:000171282000009

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG
Publisher	OPTICAL SOC AMER
Address	2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
Language	English
Keywords-Plus	POTASSIUM DIHYDROGEN PHOSPHATE; IRRADIATED KH2PO4; ABSORPTION; RADIATION; CENTERS; GROWTH; KDP
Research-Areas	Optics; Spectroscopy
Web-of-Science-Categories	Optics; Spectroscopy
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Number-of-Cited-References	32
Usage-Count-Since-2013	5
Journal-ISO	Opt. Spectrosc.
Doc-Delivery-Number	477KD