Impact of Coumarin Dye Doping on Photovoltaic Properties of Bulk Heterojunction Device

2012 ◽  
Vol 51 (8R) ◽  
pp. 080207 ◽  
Author(s):  
Kenichi Yamashita ◽  
Tomoki Watanabe ◽  
Tatsuya Maeda ◽  
Hisao Yanagi
Keyword(s):  
Bulk Heterojunction ◽  
Photovoltaic Properties ◽  
Heterojunction Device ◽  
Dye Doping ◽  
Coumarin Dye

Impact of Coumarin Dye Doping on Photovoltaic Properties of Bulk Heterojunction Device

2012 ◽  
Vol 51 ◽  
pp. 080207
Author(s):  
Kenichi Yamashita ◽  
Tomoki Watanabe ◽  
Tatsuya Maeda ◽  
Hisao Yanagi
Keyword(s):  
Bulk Heterojunction ◽  
Photovoltaic Properties ◽  
Heterojunction Device ◽  
Dye Doping ◽  
Coumarin Dye

Interfacial Energy Alignment at the ITO/Ultra-Thin Electron Selective Dielectric Layer Interface and Its Effect on the Efficiency of Bulk-Heterojunction Organic Solar Cells

2016 ◽  
Vol 16 (4) ◽  
pp. 3248-3253 ◽  
Author(s):  
Eiji Itoh ◽  
Yoshinori Goto ◽  
Yusuke Saka ◽  
Katsutoshi Fukuda
Keyword(s):  
Contact Resistance ◽  
Active Layer ◽  
Surface Potential ◽  
Organic Solar Cells ◽  
Indium Tin Oxide ◽  
Bulk Heterojunction ◽  
Electronic Charge ◽  
Photovoltaic Properties ◽  
Potential Measurement ◽  
Layer Interface

We have investigated the photovoltaic properties of an inverted bulk heterojunction (BHJ) cell in a device with an indium-tin-oxide (ITO)/electron selective layer (ESL)/P3HT:PCBM active layer/MoOx/Ag multilayered structure. The insertion of only single layer of poly(diallyl-dimethylammonium chloride) (PDDA) cationic polymer film (or poly(ethyleneimine) (PEI) polymeric interfacial dipole layer) and titanium oxide nanosheet (TN) films as an ESL effectively improved cell performance. Abnormal S-shaped curves were observed in the inverted BHJ cells owing to the contact resistance across the ITO/active layer interface and the ITO/PDDA/TN/active layer interface. The series resistance across the ITO/ESL interface in the inverted BHJ cell was successfully reduced using an interfacial layer with a positively charged surface potential with respect to ITO base electrode. The positive dipole in PEI and the electronic charge phenomena at the electrophoretic deposited TN (ED-TN) films on ITO contributed to the reduction of the contact resistance at the electrode interface. The surface potential measurement revealed that the energy alignment by the transfer of electronic charges from the ED-TN to the base electrodes. The insertion of the ESL with a large positive surface potential reduced the potential barrier for the electron injection at ITO/TN interface and it improved the photovoltaic properties of the inverted cell with an ITO/TN/active layer/MoOx/Ag structure.

Electrical characteristics of lateral organic bulk heterojunction device structures

2012 ◽  
Vol 13 (7) ◽  
pp. 1185-1191 ◽  
Author(s):  
Christopher Lombardo ◽  
Zi-En Ooi ◽  
Eric Danielson ◽  
Ananth Dodabalapur
Keyword(s):  
Bulk Heterojunction ◽  
Electrical Characteristics ◽  
Device Structures ◽  
Heterojunction Device

scholarly journals Synthesis and photovoltaic properties of thieno[3,2-b]thiophenyl substituted benzo[1,2-b:4,5-b′]dithiophene copolymers

2014 ◽  
Vol 5 (23) ◽  
pp. 6710-6717 ◽  
Author(s):  
Zeyun Xiao ◽  
Jegadesan Subbiah ◽  
Kuan Sun ◽  
David J. Jones ◽  
Andrew B. Holmes ◽  
...  
Keyword(s):  
Solar Cell ◽  
Electron Donor ◽  
Building Block ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cell ◽  
Photovoltaic Properties ◽  
Bulk Heterojunction Solar Cell ◽  
Donor Acceptor

A new thienothiophene–benzodithiophene electron donor building block was synthesized and incorporated into 2-dimensional conjugated donor–acceptor polymers. The polymers were fully characterised and tested in bulk heterojunction solar cell devices.

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