PHOTOCURRENT SPECTROSCOPY OF EXCITONIC TRANSITIONS IN CDZNS/ZNS STRAINED-LAYER SUPERLATTICES

被引：7

作者：

OHNO, T

TAGUCHI, T

机构：

[1] Department of Electrical Engineering, Osaka University, Suita Osaka

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1991年 / 30卷 / 8B期

关键词：

CDZNS/ZNS SUPERLATTICE; PHOTOCURRENT SPECTROSCOPY; FIELD EFFECT MEASUREMENTS; TYPE-II; EXCITONIC DEVICES;

D O I：

10.1143/JJAP.30.L1512

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the first observation of excitonic transitions in the photocurrent spectra (PCS) of MQW Cd(x)Zn1-xS/ZnS (x = 0.25) strained-layer superlattices (SLS). In electric field dependent PCS measured at 14 K and at room temperature, we have observed a significant blueshift of the peak energy and photocurrent enhancement with increasing applied field. These results may be fully explained by assuming that this strained superlattice system exhibits a type II band lineup. Preliminary results for photo-detection in the ultraviolet are also presented and these suggest the possibility of producing a photo-modulator in the green to UV region of the spectrum.

引用

页码：L1512 / L1515

页数：4

共 15 条

[11] TAGUCHI T, 1990, MATER RES SOC SYMP P, V161, P199
[12] TAGUCHI T, 1990, P INT C PHYS SEMICON, P1158
[13] TAGUCHI T, 1991, SUPERLATTICE MICROST, V57, P124
[14] BAND LINEUPS AND DEFORMATION POTENTIALS IN THE MODEL-SOLID THEORY
VAN DE WALLE, CG
[J]. PHYSICAL REVIEW B, 1989, 39 (03) : 1871 - 1883
[15] PHOTOCURRENT SPECTROSCOPY OF INXGA1-XAS/GAAS MULTIPLE QUANTUM WELLS
YU, PW
SANDERS, GD
EVANS, KR
REYNOLDS, DC
BAJAJ, KK
STUTZ, CE
JONES, RL
[J]. APPLIED PHYSICS LETTERS, 1989, 54 (22) : 2230 - 2232

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