Photoconductivity and hole transport in polymers of aromatic amine‐containing methacrylates

Abstract

Substantial hole transport can be achieved in organic polymers simply by incorporating aromatic amine groups into the monomer. Hole mobilities similar to or greater than those in poly(N‐vinyl‐carbazole) (PVK) were measured in a series of high molecular weight arylamine‐substituted polymethacrylates. The hole transport in these polymers is electric‐field‐dependent as in PVK, varying between E and E2 within a range of 4 × 104 − ∼9 × 105 V/cm. The polymers also exhibit carrier generation in ultraviolet (UV) light in the range of absorption. Synthesis of the monomers, their polymerization, and the general properties of these polymers are discussed.

Microphase‐Separated Donor–Acceptor Diblock Copolymers: Influence of HOMO Energy Levels and Morphology on Polymer Solar Cells

“…However, charge carrier mobilities of TPA and TPD are expected to differ by about one order of magnitude. [30,31] Therefore, comparing PvDMTPA-b-PPerAcr and PvDMTPD-b-PPerAcr, we expect to gain information regarding improved hole-transport mobility. For comparison, 9b was chosen instead of 9a because of the similarity in morphology and PPerAcr content of 9b and 10 (Fig.…”

Synthesis and Properties of Novel Derivatives of 1,3,5-Tris(diarylamino)benzenes for Electroluminescent Devices

“…All of them are good hole-transport materials, whereas the derivatives 4d and 4e additionally possess emitting properties in the blue and green region, respectively, in single-layer LEDs. In addition to the application in organic LEDs, these compounds are also of interest as photoconductors [21,22] and as photorefractive materials [23] and in hybrid photovoltaic devices. [24] We are currently working on the applicability of these materials in these fields.…”

Synthesis, molecular and electron transport properties of 2-alkyltrinitrofluoren-9-ones

“…The electron transport properties of 2 and TNF were investigated by the xerographic discharge technique under space charge limited conditions (14)(15)(16). Figure 3 shows a schematic representation of the photoconductive layered device used in these studies.…”

“…The electrical characterization of trinitrofluoren-9-ones as electron transport molecules was performed using the xerographic discharge technique under space charge limited conditions (14)(15)(16). Thc photoconductive layered device used for measurement was prepared as follows: a transport layer (lo-15 km) comprising a trinitrofluoren-9-one in PVK was solvent cast onto an aluminium substrate using a Bird film applicator.…”