Organic Electroluminescent Sensor for Pressure Measurement

Abstract

Abstract:We have proposed a novel concept of a pressure sensor called electroluminescent pressure sensor (ELPS) based on oxygen quenching of electroluminescence. The sensor was fabricated as an organic light-emitting device (OLED) with phosphorescent dyes whose phosphorescence can be quenched by oxygen molecules, and with a polymer electrode which permeates oxygen molecules. The sensor was a single-layer OLED with Platinum (II) octaethylporphine (PtOEP) doped into poly(vinylcarbazole) (PVK) as an oxygen sensitive emissive layer and poly(3,4-ethylenedioxythiophene) mixed with poly(styrenesulfonate) (PEDOT:PSS) as an oxygen permeating polymer anode. The pressure sensitivity of the fabricated ELPS sample was equivalent to that of the sensor excited by an illumination light source. Moreover, the pressure sensitivity of the sensor is equivalent to that of conventional pressure-sensitive paint (PSP), which is an optical pressure sensor based on photoluminescence.

Oxidative Coupling of Carbazoles: A Substituent-Governed Regioselectivity Profile

“…Carbazoles (Cz), 2,2′-connected diphenylamines, are inextricable heteroaromatic skeletons in the fields of organic, medicinal, and polymer chemistry . Very importantly, bicarbazoles (BCz) are found to showcase potential application in organic electronics and photonics, sensing, and memory devices because of their advantageous/exemplary characteristics, such as low ionization potentials, excellent glassy nature ( T g ), and blue luminescence, etc . In particular, they have been identified as important bioskeletons in several natural products .…”

Microminiature Pressure Sensors Based on Diode Structures

“…З іншого боку, OLED, виготовлені з багатошарових органічних тонких плівок, можна формувати на більшості підкладок, таких як скло, метали, кераміка та навіть гнучкі поверхні. Таким чином, вони також мають величезний діапазон досі невикористаних потенційних застосувань [14].…”

Construction of 3,3'‐Bicarbazoles and Indolocarbazoles by Using Visible Light

“…Bicarbazoles (BiCz) are found to showcase potential application in organic electronics, [1,2] photonics, [3] solar cells, [4] and sensing, [5] because of their advantageous/exemplary characteristics, such as low ionization potentials, excellent glassy nature (Tg), and white, [6] blue, [7] green and red luminescence, [8] etc [9] . Besides, they have been identified as important bioskeletons in several natural products and several carbazole derivatives such as bismahanine [10] show excellent anticancer activity [11] …”