Free exciton emission in GaN

被引：127

作者：

Kovalev, D ^{[1
]}

Averboukh, B ^{[1
]}

Volm, D ^{[1
]}

Meyer, BK ^{[1
]}

Amano, H ^{[1
]}

Akasaki, I ^{[1
]}

机构：

[1] MEIJI UNIV,DEPT ELECT ENGN & ELECTR,TEMPAKU KU,NAGOYA,AICHI 468,JAPAN

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.54.2518

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a detailed study of the free exciton emission in GaN. Photoluminescence and photoluminescence excitation techniques are employed to show the dominant role of exciton-phonon interaction in the creation of the flee exciton states and the free exciton emission cascade in GaN. Up to six longitudinal optical (LO) phonon replicas are observed in both photoluminescence and photoluminescence excitation spectra. From an analysis of the free exciton line shape we are able to conclude that free exciton emission and the interaction of free excitons with LO phonons have to be described within the framework of the momentum conservation law. The exciton kinetic energy distribution is found to be a Maxwellian one having the temperature of the lattice. This suggests an enhanced rate of free exciton scattering on the acoustic phonons, in contrast to other wurzite-type semiconductors.

引用

页码：2518 / 2522

页数：5

共 21 条

[1] HETEROEPITAXIAL GROWTH AND THE EFFECT OF STRAIN ON THE LUMINESCENT PROPERTIES OF GAN FILMS ON (1120) AND (0001) SAPPHIRE SUBSTRATES [J].

AMANO, H ;

HIRAMATSU, K ;

AKASAKI, I .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1988, 27 (08) :L1384-L1386

[2]

ANSELM AI, 1956, SOV PHYS JETP-USSR, V3, P564

[3]

ANSELM AI, 1955, ZH EKSP TEOR FIZ, V1, P139

[4] EXCITON-PHONON INTERACTION AND ENERGY-TRANSFER OF NITROGEN-BOUND EXCITONS IN GAP [J].

BOUMA, T ;

SCHOLTEN, AJ ;

ZONDAG, HA ;

LUIJENDIJK, T ;

DIJKHUIS, JI .

PHYSICAL REVIEW B, 1994, 49 (03) :1720-1726

[5] 1ST ORDER RAMAN-SCATTERING IN GAN [J].

CINGOLANI, A ;

FERRARA, M ;

LUGARA, M ;

SCAMARCIO, G .

SOLID STATE COMMUNICATIONS, 1986, 58 (11) :823-824

[6] OSCILLATORY EXCITON EMISSION IN CDS [J].

CONRADI, J ;

HAERING, RR .

PHYSICAL REVIEW LETTERS, 1968, 20 (24) :1344-+

[7] ABSORPTION, REFLECTANCE, AND LUMINESCENCE OF GAN EXPITAXIAL LAYERS [J].

DINGLE, R ;

SELL, DD ;

STOKOWSKI, SE ;

ILEGEMS, M .

PHYSICAL REVIEW B-SOLID STATE, 1971, 4 (04) :1211-+

[8]

ECKEY L, UNPUB

[9] ELECTRONS IN LATTICE FIELDS [J].

FROHLICH, H .

ADVANCES IN PHYSICS, 1954, 3 (11) :325-&

[10]

GELMONT BL, 1988, ZH EKSP TEOR FIZ, V67, P613

← 1 2 3 →