Results 261 to 270 of about 7,765 (302)

Hole Transport Layer in Photoelectrochemical Water Splitting

Solar RRL, 2023
Photoelectrochemical water splitting is a promising approach to produce green and renewable hydrogen fuel, alleviating the CO2 emissions, air pollution, and energy crisis. However, the efficiency is limited by the recombination of photogenerated carriers and the losses of holes, resulting in a mismatch between the rates of water oxidation and reduction
Jun Zhang, Tao Li, Jili Zheng, YanQiu Xiao, Xiaotian Li, Jun Song, Chuanxiao Cheng, Wei Yang, Gang Chen   +8 more
openaire   +1 more source

Hole transport layers deposited by magnetron sputtering

III SEVEN INTERNATIONAL MULTIDISCIPLINARY CONGRESS, 2023
Nickel oxide films have been widely studied as hole transport layers in perovskite solar cells because they present good chemical stability and nickel is abundant in nature. In this study, films were deposited using Magnetron Sputtering with a pulsed source.
Felippe de Oliveira Galindo, Lucas Pires Gomes Oliveira, José Roberto Ribeiro Bortoleto, Nilson C. da Cruz, Elidiane C. Rangel, Steven F. Durrant   +5 more
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Enhanced hole transport in C60-doped hole transport layer

Applied Physics Letters, 2006
The carrier mobility of C60-doped hole transport layer was investigated according to the C60 content. The addition of C60 in the 1, 3, 5-tris (N, N-bis-(4, 5-methoxyphenyl)-aminophenyl) benzol (TDAPB) hole transport material resulted in the increase of hole mobility of TDAPB.
Jun Yeob Lee, Jang Hyuk Kwon
openaire   +1 more source

Ambipolar Charge Transport in “Traditional” Organic Hole Transport Layers

Advanced Materials, 2012
Organic semiconductors are often labeled as electron or hole transport materials due to the primary role they perform in devices. However, despite these labels we have shown using time-of-flight that two of the traditional "hole transport materials" TPD and NPB are actually excellent electron transporters the electron transport properties of which are ...
S, Khademi, J Y, Song, P B, Wyatt, T, Kreouzis, W P, Gillin   +4 more
openaire   +2 more sources

Organic light-emitting devices with a hole-blocking layer inserted between the hole-injection layer and hole-transporting layer

Applied Physics Letters, 2006
A hole-blocking layer (HBL), 2,9-dimethyl-4, 7-diphenylphenanthroline (BCP), was incorporated between the hole-transporting layer (HTL) and hole-injection layer for a tris-(8-hydroxyqunoline) aluminum-based organic light-emitting device. Such a structure helps to reduce the hole-leakage to the cathode resulting in improved current efficiency.
Y. Divayana, B. J. Chen, X. W. Sun, K. S. Sarma   +3 more
openaire   +1 more source

Effect of Hole Injection Layer/Hole Transport Layer Polymer and Device Structure on the Properties of White OLED

Journal of Nanoscience and Nanotechnology, 2008
Copolymers containing carbazole and aromatic amine unit were synthesized by using Pd-catalyzed polycondensation reaction. The polymers were characterized in terms of their molecular weight and thermal stability and their UV and PL properties in solution and film state.
Cho, Ho Young, Park, Eun Jung, Kim, Jin-hoo, Park, Lee Soon   +3 more
openaire   +3 more sources

Atomic layer deposition of NiO hole-transporting layers for polymer solar cells

Nanotechnology, 2015
NiO is an attractive hole-transporting material for polymer solar cells (PSCs) owing to its excellent stability and electrical/optical properties. This study demonstrates, for the first time, fabrication of uniform, defect-free, and conformal NiO ultra-thin films for use as hole-transporting layers (HTLs) in PSCs by atomic layer deposition (ALD ...
Che-Chen, Hsu, Heng-Wei, Su, Cheng-Hung, Hou, Jing-Jong, Shyue, Feng-Yu, Tsai   +4 more
openaire   +2 more sources

Enhanced organic photovoltaic performance through promoting crystallinity of photoactive layer and conductivity of hole-transporting layer by V2O5 doped PEDOT:PSS hole-transporting layers

Solar Energy, 2020
Abstract The fill factor (FF) as an important photovoltaic parameter is related to the property of transport layers and active layers for organic solar cells (OSCs). Herein, we propose a simple method to improve FF by using inorganic-organic composite hole transport layer (HTL) in OSCs. Through incorporating inorganic metal oxide, vanadium pentoxide (
Jianfeng Li, Jicheng Qin, Xingpeng Liu, Meiling Ren, Junfeng Tong, Nan Zheng, Weichao Chen, Yangjun Xia   +7 more
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Efficient hole injection by doping of hexaazatriphenylene hexacarbonitrile in hole transport layer

Thin Solid Films, 2009
Abstract Hexaazatriphenylene-hexacarbonitrile (HAT) was used as a dopant in hole transport layer and hole injection properties of the HAT doped hole transport layer were studied. Hole injection was greatly improved by doping of the HAT in the hole transport material and a driving voltage was lowered by more than 3 V.
Kyoung Soo Yook, Soon Ok Jeon, Jun Yeob Lee   +2 more
openaire   +1 more source

Improved organic light-emitting devices with tunable IV by inserting a hole-blocking layer between hole-injecting layer and hole-transporting layer

2006 European Solid-State Device Research Conference, 2006
Insertion of hole-blocking layer (HBL) between the hole-transporting layer (HTL) and hole-injection layer for tris-(8-hydroxyquinoline) aluminum (Alq3)-based organic light-emitting device is shown to improve the current efficiency by 30%. The improvement was attributed to the better electron-hole balance in the device.
Y. Divayana, B. Chen, X. Sun, G. Lo, K. Sarma   +4 more
openaire   +1 more source