LIFETIME OF INDIRECT EXCITONS IN AGBR QUANTUM DOTS

被引：17

作者：

MASUMOTO, Y ^{[1
]}

KAWAMURA, T ^{[1
]}

OHZEKI, T ^{[1
]}

URABE, S ^{[1
]}

机构：

[1] FUJI PHOTO FILM CO LTD,ASHIGARA RES LABS,KANAGAWA 25001,JAPAN

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.46.1827

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The lifetime of indirect excitons in AgBr quantum dots was studied at low temperature. Indirect-exciton luminescence shows a nonexponential decay. The unique nonexponential decay is well explained by a model that takes into account the discrete number of iodine impurities in a AgBr quantum dot. The obtained radiative lifetime of indirect excitons is 735+/-50-mu-s at 2 K and is independent of the radius of microscrystals. The result clearly shows that the L-GAMMA mixing effect for holes does not work when the radius is larger than 3.5 nm.

引用

页码：1827 / 1830

页数：4

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