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Title: Stark spectroscopy of CdTe and CdMnTe quantum dots embedded in n-i-p diodes

We investigate charging effects in CdTe and Cd{sub 1−x}Mn{sub x}Te quantum dots embedded in n-i-p diodes. The tunneling of holes out of the dots at reverse bias and hole injection at forward bias control the dot charge state and allow for its electric field tuning. Furthermore, we analyze the Stark shifts of the photoluminescence transitions and evaluate the effect of the electric field on the binding of the observed excitonic complexes. We find that the binding can be strengthened or weakened depending on the zero-field alignment of the electron and hole wavefunctions.
Authors:
; ; ; ; ;  [1]
  1. Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw (Poland)
Publication Date:
OSTI Identifier:
22304319
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CADMIUM TELLURIDES; CHARGE STATES; ELECTRIC FIELDS; MANGANESE COMPOUNDS; PHOTOLUMINESCENCE; P-N JUNCTIONS; QUANTUM DOTS; SPECTROSCOPY; TUNNEL EFFECT; WAVE FUNCTIONS