A time-resolved luminescence spectroscopy study of self-trapped excitons in KH2PO4 crystals / Ogorodnikov IN,Kirm M,Pustovarov VA,Cheremnykh VS // RADIATION MEASUREMENTS. - 2004. - V. 38, l. 3. - P. 331-334.

ISSN/EISSN:

1350-4487 / нет данных

Type:

Article

Abstract:

A complex investigation of the dynamics of electronic excitations in potassium dihydrophosphate (KDP) crystals is performed by the 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 cV, 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) 2004 Elsevier Ltd. All rights reserved.

Author keywords:

potassium dihydrophosphate KH2PO4 (KDP); self-trapped exciton; time-resolved luminescence; excitation spectra ULTRAVIOLET REFLECTION; OPTICAL-ABSORPTION; ADP; KDP; NH4H2PO4; ELECTRON

DOI:

10.1016/j.radmeas.2004.01.038

Web of Science ID:

ISI:000220942600010

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	ULTRAVIOLET REFLECTION; OPTICAL-ABSORPTION; ADP; KDP; NH4H2PO4; ELECTRON
Research-Areas	Nuclear Science \& Technology
Web-of-Science-Categories	Nuclear Science \& Technology
Author-Email	ogo@dpt.ustu.ru
ResearcherID-Numbers	Kirm, Marco/M-1533-2016 Ogorodnikov, Igor/B-4162-2011
ORCID-Numbers	Kirm, Marco/0000-0002-1833-6894 Ogorodnikov, Igor/0000-0002-4700-2340
Number-of-Cited-References	12
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	1
Journal-ISO	Radiat. Meas.
Doc-Delivery-Number	813YO