THERMAL-DISSOCIATION OF PHOTOPRODUCED EXCITONS AT THE UV BAND EDGE IN NAI

被引：6

作者：

EMKEY, WL

ROMBERGER, AB

VANSCIVER, WJ

机构：

[1] PENN STATE UNIV,READING,PA 19608

[2] LEHIGH UNIV,BETHLEHEM,PA 18015

来源：

PHYSICAL REVIEW B | 1979年 / 20卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.20.5326

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recombination luminescence is stimulated with red-infrared light in NaI which has been exposed previously to ultraviolet radiation in the low-energy tail of the fundamental absorption spectrum. This stimulated luminescence was undetectable below approximately 65 K and was found to have an activation energy of 0.06±0.01 eV. Evidence is presented which suggests the thermal dissociation of free excitons. © 1979 The American Physical Society.

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页码：5326 / 5329

页数：4

相关论文

共 10 条

[1] PHOTOCONDUCTIVITY DUE TO EXCITONIC-ENERGY TRANSFER TO CRYSTALLINE DEFECTS [J].

EMKEY, WL ;

VANSCIVE.WJ .

PHYSICAL REVIEW B, 1972, 5 (02) :610-&

[2] PROPERTIES OF EXCITON STATES IN NAI .I. INTRINSIC PHOTOLUMINESCENCE [J].

FONTANA, MP ;

BLUME, H ;

VANSCIVE.WJ .

PHYSICA STATUS SOLIDI, 1968, 29 (01) :159-&

[3]

KUUSMANN IL, 1976, SOV PHYS-SOLID STATE, V7, P2312

[4] IMPURITY-ASSISTED PHOTOPRODUCTION OF ISOLATED VK CENTERS AT UV BAND EDGE IN NAI [J].

MEYERS, PV ;

VANSCIVER, WJ .

PHYSICAL REVIEW B, 1978, 17 (12) :4959-4968

[5] LIFETIME OF ELECTRONS, HOLES AND EXCITONS BEFORE SELF-TRAPPING [J].

MOTT, NF ;

STONEHAM, AM .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1977, 10 (17) :3391-3398

[6] INTRINSIC LUMINESCENCES OF KI CRYSTALS [J].

NISHIMURA, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1975, 38 (02) :450-458

[7] INTRINSIC LUMINESCENCES AND EXCITON DIFFUSION IN NAI CRYSTALS [J].

NISHIMURA, H ;

KUBOTA, T ;

TOMURA, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1977, 42 (01) :175-183

[8] DIFFUSION OF VK-POLARON IN ALKALI-HALIDES - EXPERIMENTS IN NAI AND RBI [J].

POPP, RD ;

MURRAY, RB .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1972, 33 (03) :601-&

[9] URBACH-MARTIENSSEN RULE AND EXCITON TRAPPED MOMENTARILY BY LATTICE VIBRATIONS [J].

SUMI, H ;

TOYOZAWA, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1971, 31 (02) :342-&

[10] FLUORESCENCE AND REFLECTION SPECTRA OF NAI SINGLE CRYSTALS [J].

VANSCIVER, WJ .

PHYSICAL REVIEW, 1960, 120 (04) :1193-1205