ISU Electrical and Computer Engineering Archives

PECVD grown DBR for microcavity OLED sensor

Bohlen, Brandon (2007) PECVD grown DBR for microcavity OLED sensor. Masters thesis, Iowa State University.

This is the latest version of this eprint.

Full text available as:

PDF - Requires Adobe Acrobat Reader or other PDF viewer.

Abstract

The use of OLEDs as the light source in a photoluminescent sensor was studied for the detection of various chemicals. Controlling the bandwidth of light emitted by the OLED could increase the sensitivity of these sensors. Building the OLEDs in a microcavity structure allows the bandwidth and peak frequency of light being emitted to be controlled and adjusted. A key component of a microcavity is a partially transmitting reflector. A dielectric mirror can be manufactured with varying reflectance and integrated into the OLED. The dielectric mirror created for this project is a distributed Bragg reflector (DBR) made of alternating silicon nitride and silicon dioxide layers grown with plasma-enhanced chemical vapor deposition (PECVD). A repeatable method for the manufacture of DBRs was designed. Three DBRs were grown on glass slides and measured with a spectrophotometer. The slides had reflectance of 75-85% with bandwidths of 170-180nm centered around 570-590nm.

EPrint Type:Thesis (Masters)
Uncontrolled Keywords:distributed Bragg reflector DBR microcavity organic light emitting light-emitting diode device OLED plasma enhanced plasma-enhanced chemical vapor deposition PECVD brandon bohlen thesis
Subjects:Electrical Engineering > MICROELECTRONICS & PHOTONICS > Thin Film Transistors and Sensors
Electrical Engineering > MICROELECTRONICS & PHOTONICS > Semiconductor Materials & Devices Processing
Electrical Engineering > MICROELECTRONICS & PHOTONICS > Photonics
ID Code:405
Identification Number:Identification Number UNSPECIFIED
Deposited By:Brandon Bohlen
Deposited On:29 November 2007

Available Versions of this Item

Archive Staff Only: edit this record