Low-temperature time-resolved vacuum ultraviolet spectroscopy of self-trapped excitons in KH2PO4 crystals / Ogorodnikov IN,Kirm M,Pustovarov VA,Cheremnykh VS // OPTICS AND SPECTROSCOPY. - 2003. - V. 95, l. 3. - P. 385-389.

ISSN/EISSN:

0030-400X / нет данных

Type:

Article

Abstract:

A complex investigation of the dynamics of electronic excitations in potassium dihydrophosphate (KDP) crystals is performed by low-temperature time-resolved vacuum ultraviolet optical luminescence spectroscopy with subnanosecond time resolution and with selective photoexcitation by synchrotron radiation. For KDP crystals, data on the kinetics of the photoluminescence (PL) decay, time-resolved PL spectra (2-6.2 eV), and time-resolved excitation PL spectra (4-24 eV) at 10 K were obtained for the first time. The intrinsic character of the PL of KDP in the vicinity of 5.2 eV, which is caused by the radiative annihilation of self-trapped excitons (STEs), is ascertained; sigma and pi bands in the luminescence spectra of the STEs, which are due to singlet and triplet radiative transitions, are resolved; and the shift of the sigma band with respect to the pi band in the spectra of the STEs is explained. (C) 2003 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

OPTICAL-ABSORPTION; ELECTRON EXCITATIONS; COMPLEX OXIDES; LUMINESCENCE; KDP; ADP; IDENTIFICATION; RELAXATION; REFLECTION; NH4H2PO4

DOI:

10.1134/1.1613000

Web of Science ID:

ISI:000186195200010

Соавторы в МНС:

Другие поля

Поле	Значение
Month	SEP
Publisher	OPTICAL SOC AMER
Address	2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
Language	English
Keywords-Plus	OPTICAL-ABSORPTION; ELECTRON EXCITATIONS; COMPLEX OXIDES; LUMINESCENCE; KDP; ADP; IDENTIFICATION; RELAXATION; REFLECTION; NH4H2PO4
Research-Areas	Optics; Spectroscopy
Web-of-Science-Categories	Optics; Spectroscopy
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011 Kirm, Marco/M-1533-2016
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340 Kirm, Marco/0000-0002-1833-6894
Number-of-Cited-References	25
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	1
Journal-ISO	Opt. Spectrosc.
Doc-Delivery-Number	736WB