Transient optical absorption of hole polarons in ADP (NH4H2PO4) and KDP (KH2PO4) crystals / Ogorodnikov IN,Yakovlev VY,Shul'gin BV,Satybaldieva MK // PHYSICS OF THE SOLID STATE. - 2002. - V. 44, l. 5. - P. 880-887.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

A study of transient optical absorption of the ADP (NH4H2PO4) and KDP (KH2PO4) nonlinear crystals in the visible and UV spectral regions is reported. Measurements made by absorption optical spectroscopy with nanosecond-time resolution established that the transient optical absorption (TOA) of these crystals originates from optical transitions in the hole A and B radicals and the optical-density relaxation kinetics is rate-controlled by interdefect tunneling recombination, which involves these hole centers and the electronic H-0 centers representing neutral hydrogen atoms. At 290 K, hole polarons and the H-0 centers undergo thermally stimulated migration, which is not accompanied by carrier ejection into the conduction or valence band. The slow components of the TOA kinetics with characteristic times from a few tens of milliseconds to a few seconds can be assigned to diffusion-controlled annihilation of hydrogen vacancies associated with impurity or structural defects. (C) 2002 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

POTASSIUM DIHYDROGEN PHOSPHATE; ELECTRON-SPIN-RESONANCE; IRRADIATED KH2PO4; IDENTIFICATION; CENTERS

DOI:

10.1134/1.1477487

Web of Science ID:

ISI:000175297300013

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	AMER INST PHYSICS
Address	CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Language	English
Keywords-Plus	POTASSIUM DIHYDROGEN PHOSPHATE; ELECTRON-SPIN-RESONANCE; IRRADIATED KH2PO4; IDENTIFICATION; CENTERS
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Number-of-Cited-References	34
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	7
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	546VW