Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Enhanced absorption and electro-optic Pockels effect of electrostatically self-assembled CdSe quantum dots

Not Accessible

Your library or personal account may give you access

Abstract

The spectrum and electro-optic properties of CdSe quantum dots are studied. Spectrum wavelength shifts that are due to the quantum size effect and to the electro-optic Stark effect are investigated. It is found that CdSe quantum dot–polymer composites formed by an electrostatic self-assembly (ESA) technique exhibit high internal electric fields. Using the second-order perturbation theory of the 1s–1s energy shift (Stark effect), we estimate the internal field of the ESA film to be as high as 2.6 × 108 V/m. This value results in a much higher absorption coefficient and electro-optic coefficients for ESA films than for their bulk crystal counterparts or for spin-coated film samples. The relationships among unusual spectra, film structure, and high electro-optic response are analyzed. These results are useful both for understanding the physical mechanisms of semiconductor quantum dots and for developing high-performance photonic devices.

© 2005 Optical Society of America

Full Article  |  PDF Article
More Like This
Dynamically tuning emission band of CdSe/ZnS quantum dots assembled on Ag nanorod array: plasmon-enhanced Stark shift

Xiao-Niu Peng, Zhang-Kai Zhou, Wei Zhang, and Zhong-Hua Hao
Opt. Express 19(24) 24804-24809 (2011)

Electro-optic and electro-absorption characterization of InAs quantum dot waveguides

Imran B. Akca, Aykutlu Dâna, Atilla Aydinli, Marco Rossetti, Lianhe Li, Andrea Fiore, and Nadir Dagli
Opt. Express 16(5) 3439-3444 (2008)

Full determination of single ferroelectric nanocrystal orientation by Pockels electro-optic microscopy

Duc Thien Trinh, Ludovic Mayer, Bassam Hajj, Joseph Lautru, Joseph Zyss, and Vasyl Shynkar
Appl. Opt. 54(11) 3412-3421 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (10)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved