Properties of light emitting organic materials within the context of future electrically pumped lasers

Organic Light‐Emitting Diodes Based on Poly(9,9‐dioctylfluorene‐co‐bithiophene) (F8T2)

“…This trapassisted electron injection results in wellbalanced charge carrier injection and mobility with commensurate improvement in electroluminescence (EL) efficiency. [4] Although weak charge transport is in this instance a useful property, some potential applications, such as organic light-emitting field effect transistors (FETs) [5][6][7] and electrically pumped organic lasers, [8,9] require both efficient light emission and effective charge transport.…”

Electroluminescent devices based on cross-linked polymer blends

“…As with small molecule organic light emitting diodes ͑OLEDs͒, luminescent dyes may be blended into the ͑conjugated͒ polymer to improve luminescence efficiency 9,10 or to tune the color properties of OLEDs. [12][13][14][15][16] Polymer blends have also been investigated for application to photovoltaics, [17][18][19][20][21] lasers, 22 sensors, [23][24][25][26] and batteries. Processing and synthetic steps are both minimized in an actively pursued approach which aims to achieve electron-hole balance by blending two or more polymers, with different electron and hole transporting and luminescent characteristics.…”

Photoluminescent mechanism of a proton-transfer laser dye in highly doped polymer films

“…Toward realization of OLDs, therefore, one should at least tackle two contrastive subjects to make net gain positive (g -α > 0): one is the creation of novel laser dyes to raise gain much further, and the other is the drastic innovation for the structure and operation of OLEDs to make losses as small as possible [9][10][11].…”