TY - JOUR
T1 - High-efficiency polymer LEDs with fast response times fabricated via selection of electron-injecting conjugated polyelectrolyte backbone structure
AU - Suh, Minwon
AU - Bailey, Jim
AU - Kim, Sung Wook
AU - Kim, Kyungmok
AU - Yun, Dong Jin
AU - Jung, Youngsuk
AU - Hamilton, Iain
AU - Chander, Nathan
AU - Wang, Xuhua
AU - Bradley, Donal D.C.
AU - Jeon, Duk Young
AU - Kim, Ji Seon
N1 - Generated from Scopus record by KAUST IRTS on 2019-11-27
PY - 2015/12/9
Y1 - 2015/12/9
N2 - Imidazolium ionic side-group-containing fluorene-based conjugated polyelectrolytes (CPEs) with different π-conjugated structures, poly[(9,9-bis(8′-(3-methyl-1-imidazolium)octyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)] dibromide (F8im-Br) and poly[(9,9-bis(8′-(3-methyl-1-imidazolium)octyl)-2,7-fluorene)-alt-(benzo(2,1,3)thiadiazol-4,8-diyl) dibromide (F8imBT-Br), are synthesized and utilized as an electron injection layer (EIL) in green-emitting F8BT polymer light-emitting diodes (PLEDs). Both CPE EIL devices significantly outperform Ca cathode devices; 17.9 cd A-1 (at 3.8 V) and 16.6 lm W-1 (at 3.0 V) for F8imBT-Br devices, 11.1 cd A-1 (at 4.2 V) and 9.1 lm W-1 (at 3.4 V) for F8im-Br devices, and 7.2 cd A-1 (at 3.6 V) and 7.0 lm W-1 (at 3.0 V) for Ca devices. Importantly, unlike the F8im-Br EIL devices, F8imBT-Br PLEDs exhibit much faster electroluminescence turn-on times (
AB - Imidazolium ionic side-group-containing fluorene-based conjugated polyelectrolytes (CPEs) with different π-conjugated structures, poly[(9,9-bis(8′-(3-methyl-1-imidazolium)octyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)] dibromide (F8im-Br) and poly[(9,9-bis(8′-(3-methyl-1-imidazolium)octyl)-2,7-fluorene)-alt-(benzo(2,1,3)thiadiazol-4,8-diyl) dibromide (F8imBT-Br), are synthesized and utilized as an electron injection layer (EIL) in green-emitting F8BT polymer light-emitting diodes (PLEDs). Both CPE EIL devices significantly outperform Ca cathode devices; 17.9 cd A-1 (at 3.8 V) and 16.6 lm W-1 (at 3.0 V) for F8imBT-Br devices, 11.1 cd A-1 (at 4.2 V) and 9.1 lm W-1 (at 3.4 V) for F8im-Br devices, and 7.2 cd A-1 (at 3.6 V) and 7.0 lm W-1 (at 3.0 V) for Ca devices. Importantly, unlike the F8im-Br EIL devices, F8imBT-Br PLEDs exhibit much faster electroluminescence turn-on times (
UR - https://pubs.acs.org/doi/10.1021/acsami.5b07862
UR - http://www.scopus.com/inward/record.url?scp=84949683987&partnerID=8YFLogxK
U2 - 10.1021/acsami.5b07862
DO - 10.1021/acsami.5b07862
M3 - Article
SN - 1944-8252
VL - 7
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 48
ER -