Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDs
Two new hole transporting materials, named HTM 1A and HTM 1B, were designed and synthesized in significant yields using the well-known Buchwald Hartwig and Suzuki cross- coupling reactions. Both materials showed higher decomposition temperatures (over 450 °C) at 5% weight reduction and HTM 1B exhibi...
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MDPI AG
2017-03-01
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| Series: | Molecules |
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| Online Access: | http://www.mdpi.com/1420-3049/22/3/464 |
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doaj-77e468b2b6e442ce84da50100b1f979f2020-11-24T23:59:33ZengMDPI AGMolecules1420-30492017-03-0122346410.3390/molecules22030464molecules22030464Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDsRamanaskanda Braveenth0Hyeong Woo Bae1Quynh Pham Bao Nguyen2Haye Min Ko3Choong Hun Lee4Hyeong Jun Kim5Jang Hyuk Kwon6Kyu Yun Chai7Division of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University, Chonbuk, Iksan 570-749, KoreaDepartment of Information Display, Kyung Hee University, Dongdaemoon-gu, Seoul 130-701, KoreaDivision of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University, Chonbuk, Iksan 570-749, KoreaDivision of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University, Chonbuk, Iksan 570-749, KoreaDivision of Microelectronics and Display Technology, Wonkwang University, Iksan 570-749, KoreaDivision of Microelectronics and Display Technology, Wonkwang University, Iksan 570-749, KoreaDepartment of Information Display, Kyung Hee University, Dongdaemoon-gu, Seoul 130-701, KoreaDivision of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University, Chonbuk, Iksan 570-749, KoreaTwo new hole transporting materials, named HTM 1A and HTM 1B, were designed and synthesized in significant yields using the well-known Buchwald Hartwig and Suzuki cross- coupling reactions. Both materials showed higher decomposition temperatures (over 450 °C) at 5% weight reduction and HTM 1B exhibited a higher glass transition temperature of 180 °C. Red phosphorescence-based OLED devices were fabricated to analyze the device performances compared to Spiro-NPB and NPB as reference hole transporting materials. Devices consist of hole transporting material as HTM 1B showed better maximum current and power efficiencies of 16.16 cd/A and 11.17 lm/W, at the same time it revealed an improved external quantum efficiency of 13.64%. This efficiency is considerably higher than that of Spiro-NPB and NPB-based reference devices.http://www.mdpi.com/1420-3049/22/3/464organic light emitting diodeshole transporting materialsred phosphorescencespirobifluorene |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Ramanaskanda Braveenth Hyeong Woo Bae Quynh Pham Bao Nguyen Haye Min Ko Choong Hun Lee Hyeong Jun Kim Jang Hyuk Kwon Kyu Yun Chai |
| spellingShingle |
Ramanaskanda Braveenth Hyeong Woo Bae Quynh Pham Bao Nguyen Haye Min Ko Choong Hun Lee Hyeong Jun Kim Jang Hyuk Kwon Kyu Yun Chai Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDs Molecules organic light emitting diodes hole transporting materials red phosphorescence spirobifluorene |
| author_facet |
Ramanaskanda Braveenth Hyeong Woo Bae Quynh Pham Bao Nguyen Haye Min Ko Choong Hun Lee Hyeong Jun Kim Jang Hyuk Kwon Kyu Yun Chai |
| author_sort |
Ramanaskanda Braveenth |
| title |
Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDs |
| title_short |
Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDs |
| title_full |
Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDs |
| title_fullStr |
Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDs |
| title_full_unstemmed |
Spirobifluorene Core-Based Novel Hole Transporting Materials for Red Phosphorescence OLEDs |
| title_sort |
spirobifluorene core-based novel hole transporting materials for red phosphorescence oleds |
| publisher |
MDPI AG |
| series |
Molecules |
| issn |
1420-3049 |
| publishDate |
2017-03-01 |
| description |
Two new hole transporting materials, named HTM 1A and HTM 1B, were designed and synthesized in significant yields using the well-known Buchwald Hartwig and Suzuki cross- coupling reactions. Both materials showed higher decomposition temperatures (over 450 °C) at 5% weight reduction and HTM 1B exhibited a higher glass transition temperature of 180 °C. Red phosphorescence-based OLED devices were fabricated to analyze the device performances compared to Spiro-NPB and NPB as reference hole transporting materials. Devices consist of hole transporting material as HTM 1B showed better maximum current and power efficiencies of 16.16 cd/A and 11.17 lm/W, at the same time it revealed an improved external quantum efficiency of 13.64%. This efficiency is considerably higher than that of Spiro-NPB and NPB-based reference devices. |
| topic |
organic light emitting diodes hole transporting materials red phosphorescence spirobifluorene |
| url |
http://www.mdpi.com/1420-3049/22/3/464 |
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