NANO-OPTICAL STUDIES OF INDIVIDUAL NANOSTRUCTURES

被引:25
作者
SAMUELSON, L
CARLSSON, N
CASTRILLO, P
GUSTAFSSON, A
HESSMAN, D
LINDAHL, J
MONTELIUS, L
PETERSSON, A
PISTOL, ME
SEIFERT, W
机构
[1] Department of Solid State Physics, Lund University, S-221 00 Lund
[2] Department of Electricity and Electronics, Univ. of Valladolid
[3] Inst. de Micro- et Opto’lectronique, EPFL, Lausanne
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1995年 / 34卷 / 8B期
关键词
NANO-OPTICAL TECHNIQUES; SPECTROSCOPY; QUANTUM DOT; IMAGE; IMPURITY;
D O I
10.1143/JJAP.34.4392
中图分类号
O59 [应用物理学];
学科分类号
摘要
Optical techniques play a significant role in studies of nano-structures. The electronic structures of quantum dots, for example, vary with the geometric sizes in an ensemble, resulting in broadened spectral lines. Recently, different forms of local spectroscopic techniques have been applied to investigate such inhomogeneously broadened emission lines. In this paper are report on three methods for local spectroscopy: cathodo-luminescence, luminescence induced by a scanning tunnel microscope and microphotoluminescence. Each of these techniques is shown to have the capacity to investigate single quantum dots, with linewidths in the range 40-1000 mu eV. Besides demonstrating the possibility of imaging and spectroscopically studing individual dots, we also demonstrate the possibility of investigating single impurify atoms, in imaging as well as in emission spectroscopy modes.
引用
收藏
页码:4392 / 4397
页数:6
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