Results 1 to 10 of about 7,765 (302)

Manipulation and control of the interfacial polarization in organic light-emitting diodes by dipolar doping

AIP Advances, 2016
Most of the commonly used electron transporting materials in organic light-emitting diodes exhibit interfacial polarization resulting from partially aligned permanent dipole moments of the molecules.
Lars Jäger, Tobias D. Schmidt, Wolfgang Brütting   +2 more
doaj   +1 more source

Mitigating the Efficiency Loss of Organic Photovoltaic Cells Using Phosphomolybdic Acid‐Doped PEDOT:PSS as Hole Transporting Layer

Advanced Energy & Sustainability Research, 2023
A phosphomolybdic acid (PMA)‐doped poly(3,4‐ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) hole transporting layer (HTL) is developed to effectively optimize the anode interface of inverted organic photovoltaic (OPV) devices.
Yi-Ming Chang, Wei-Long Li, Chia-Hua Tsai, Nai-Wei Teng   +3 more
doaj   +1 more source

Utilizing a Spiro Core with Acridine- and Phenothiazine-Based New Hole Transporting Materials for Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

Molecules, 2018
Two new hole transporting materials, 2,7-bis(9,9-diphenylacridin-10(9H)-yl)-9,9′ spirobi[fluorene] (SP1) and 2,7-di(10H-phenothiazin-10-yl)-9,9′-spirobi[fluorene] (SP2), were designed and synthesized by using the Buchwald–Hartwig coupling reaction with a
Ramanaskanda Braveenth, Il-Ji Bae, Ji-Hun Han, Wu Qiong, Guk Seon, Kanthasamy Raagulan, Kihun Yang, Young Hee Park, Miyoung Kim, Kyu Yun Chai   +9 more
doaj   +1 more source

1,3-Diphenylethenylcarbazolyl-Based Monomer for Cross-Linked Hole Transporting Layers [PDF]

Molecules, 2015
A new cross-linkable monomer containing 1,3-diphenylethenylcarbazolyl-based hole-transporting moieties and four reactive epoxy groups, was prepared by a multistep synthesis route from 1,3-bis(2,2-diphenylethenyl)-9H-carbazol-2-ol and its application for the in situ formation of cross-linked hole transporting layers was investigated.
Daškevičienė, Marytė, Bubnienė, Giedrė, Malinauskas, Tadas, Jankauskas, Vygintas, Gaidelis, Valentas, Paulauskas, Valdas, Getautis, Vytautas   +6 more
openaire   +5 more sources

Di(arylcarbazole) Substituted Oxetanes as Efficient Hole Transporting Materials with High Thermal and Morphological Stability for OLEDs

Molecules, 2023
A group of di(arylcarbazole)-substituted oxetanes has been prepared in Suzuki reactions by using the key starting material 3,3-di[3-iodocarbazol-9-yl]methyloxetane and various boronic acids (fluorophenylboronic acid, phenylboronic acid or naphthalene-1 ...
Daiva Tavgeniene, Baohua Zhang, Saulius Grigalevicius   +2 more
doaj   +1 more source

Hole transport layers in organic solar cells: A review

Journal of Metals, Materials and Minerals, 2022
Thanks to huge research efforts, organic solar cells have become serious candidates in the field of renewable energy sources, with reported power conversion efficiencies above 19% and operating lifetime surpassing decades. In the thin film stack composing the organic solar cell, the transport layers at interfaces play a key role, as important as the ...
Alkarsifi, Riva, Ackermann, Jörg, Margeat, Olivier   +2 more
openaire   +2 more sources

Pyrene-Based Blue AIEgen: Enhanced Hole Mobility and Good EL Performance in Solution-Processed OLEDs

Molecules, 2017
Organic luminogens with strong solid-state emission have attracted much attention for their widely practical applications. However, the traditional organic luminogens with planar conformations often suffer from the notorious aggregation-caused quenching (
Jie Yang, Jianwen Qin, Zichun Ren, Qian Peng, Guohua Xie, Zhen Li   +5 more
doaj   +1 more source

Waterproof and ultraflexible organic photovoltaics with improved interface adhesion

Nature Communications
Ultraflexible organic photovoltaics have emerged as a potential power source for wearable electronics owing to their stretchability and lightweight nature.
Sixing Xiong, Kenjiro Fukuda, Kyohei Nakano, Shinyoung Lee, Yutaro Sumi, Masahito Takakuwa, Daishi Inoue, Daisuke Hashizume, Baocai Du, Tomoyuki Yokota, Yinhua Zhou, Keisuke Tajima, Takao Someya   +12 more
doaj   +1 more source

New Electroactive Polymers with Electronically Isolated 4,7-Diarylfluorene Chromophores as Positive Charge Transporting Layer Materials for OLEDs

Molecules, 2021
A group of polyethers containing electroactive pendent 4,7-diarylfluorene chromophores have been prepared by the multi-step synthetic route. Full characterization of their structures has been presented.
Gintare Krucaite, Daiva Tavgeniene, Dovydas Blazevicius, Baohua Zhang, Aivars Vembris, Saulius Grigalevicius   +5 more
doaj   +1 more source

Layer interdependence of transport in an undoped electron-hole bilayer [PDF]

Physical Review B, 2008
The layer interdependence of transport in an undoped electron-hole bilayer (uEHBL) device was studied as a function of carrier density, interlayer electric field, and temperature. The uEHBL device consisted of a density tunable, independently contacted two-dimensional electron gas (2DEG) and two-dimensional hole gas (2DHG) induced via field effect in ...
Morath, C. P., Seamons, J. A., Reno, J. L., Lilly, M. P.   +3 more
openaire   +2 more sources