Optical memory media based on excitation-time dependent luminescence from a thin film of semiconductor nanocrystals

被引：51

作者：

Maenosono, S ^{[1
]}

Dushkin, CD ^{[1
]}

Saita, S ^{[1
]}

Yamaguchi, Y ^{[1
]}

机构：

[1] Mitsubishi Chem Corp, Yokohama Res Ctr, Nonequilibrium Lab, Aoba Ku, Yokohama, Kanagawa 2278502, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2000年 / 39卷 / 7A期

关键词：

optical memory; excitation-time dependent luminescence; image storage; semiconductor nanocrystal; cadmium selenide; thin nanoparticle film; tri-octylphosphine oxide; spin coating;

D O I：

10.1143/JJAP.39.4006

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We describe the increase of photoluminescence intensity Gum densely packed semiconductor nanocrystals (quantum dots) with excitation time, which is clearly observed by the naked eye under ambient conditions. This enabled the invention of the first luminescence-based optical memory media feasible for practical applications. Bright luminescent images are stored and then read out by exciting the medium, a thin film of cadmium selenide nanocrystals, with blue or UV light. The increase in emission intensity is attributed to the trapping and accumulation of photo-generated electrons in the matrix of organic molecules capping the nanocrystals.

引用

页码：4006 / 4012

页数：7

共 19 条

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[2]

BRUCKER CF, 1997, HDB PHOTONICS, pCH17

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