Molecular architecturing of a small two dimensional A-D-A molecule for photovoltaic application

MRS Advances ◽  
2016 ◽  
Vol 1 (43) ◽  
pp. 2917-2922 ◽  
Author(s):  
Vinila Nellissery Viswanathan ◽  
Arul Varman Kesavan ◽  
Praveen C Ramamurthy
Keyword(s):  
Band Gap ◽  
Bulk Heterojunction ◽  
Energy Levels ◽  
Photovoltaic Device ◽  
Frontier Molecular Orbital ◽  
Orbital Energy ◽  
Low Band Gap ◽  
Solar Cell Application ◽  
Photovoltaic Application ◽  
Bulk Heterojunction Solar Cell

ABSTRACTA-D-A architectured quinoxaline and bezodithiophene based small molecule exhibiting low band gap was designed and synthesized for bulk heterojunction solar cell application. Two dimension conjugation to the molecule was imparted by using alkylated aromatic units. This effective extension of conjugation broadens the absorption spectra. Optical and electrochemical properties suggest that the synthesized molecule has a low band-gap and well matching frontier molecular orbital energy levels with that of PCBM. A photovoltaic device using this A-D-A molecule as the active layer was fabricated to evaluate the optoelectronics properties.

Predictably tuning the frontier molecular orbital energy levels of panchromatic low band gap BODIPY-based conjugated polymers

2012 ◽  
Vol 3 (10) ◽  
pp. 3093 ◽  
Author(s):  
Bhooshan C. Popere ◽  
Andrea M. Della Pelle ◽  
Ambata Poe ◽  
Ganapathy Balaji ◽  
S. Thayumanavan
Keyword(s):  
Conjugated Polymers ◽  
Band Gap ◽  
Molecular Orbital ◽  
Energy Levels ◽  
Frontier Molecular Orbital ◽  
Orbital Energy ◽  
Low Band Gap ◽  
Molecular Orbital Energy

Extended Photocurrent Spectrum of a Low Band Gap Polymer in a Bulk Heterojunction Solar Cell

2005 ◽  
Vol 17 (16) ◽  
pp. 4031-4033 ◽  
Author(s):  
Luis M. Campos ◽  
Ana Tontcheva ◽  
Serap Günes ◽  
Gursel Sonmez ◽  
Helmut Neugebauer ◽  
...  
Keyword(s):  
Solar Cell ◽  
Band Gap ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cell ◽  
Photocurrent Spectrum ◽  
Low Band Gap ◽  
Bulk Heterojunction Solar Cell ◽  
Low Band Gap Polymer

High open circuit voltage organic solar cells based upon fullerene free bulk heterojunction active layers

2014 ◽  
Vol 92 (10) ◽  
pp. 932-939 ◽  
Author(s):  
Ala’a F. Eftaiha ◽  
Jon-Paul Sun ◽  
Arthur D. Hendsbee ◽  
Casper Macaulay ◽  
Ian G. Hill ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Field Effect Transistors ◽  
Bulk Heterojunction ◽  
Energy Levels ◽  
Open Circuit ◽  
Frontier Molecular Orbital ◽  
Orbital Energy ◽  
High Electron

We have recently reported on a small organic molecule containing a bithiophene core with end-capping phthalimide units (PthTh2Pth) that exhibited a H-aggregation tendency in the solid state and high electron mobility in organic field effect transistors. In this contribution, we have studied both the physical and electrical properties of poly(3-hexylthiophene) (P3HT) and PthTh2Pth thin films by measuring the optical absorption, Frontier molecular orbital energy levels, photoluminescence quenching, thermal properties, and photovoltaic response. Our results have provided a useful insight into the use of PthTh2Pth as an electron acceptor material for organic photovoltaic applications. In comparison with high-performance, fullerene-based, solution-processed bulk heterojunction solar cells reported in the literature, a relatively high open circuit voltage (∼0.94 V) was obtained for various donor–acceptor blend ratios. These results highlight the potential for PthTh2Pth to act as an alternative to fullerenes as acceptors in organic solar cell devices.

High photovoltage achieved in low band gap polymer solar cells by adjusting energy levels of a polymer with the LUMOs of fullerene derivatives

2008 ◽  
Vol 18 (45) ◽  
pp. 5468 ◽  
Author(s):  
Fengling Zhang ◽  
Johan Bijleveld ◽  
Erik Perzon ◽  
Kristofer Tvingstedt ◽  
Sophie Barrau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Low Band Gap ◽  
Fullerene Derivatives ◽  
Low Band Gap Polymer

Design and synthesis of new ultra-low band gap thiadiazoloquinoxaline-based polymers for near-infrared organic photovoltaic application

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14893-14908 ◽  
Author(s):  
M. L. Keshtov ◽  
S. A. Kuklin ◽  
N. A. Radychev ◽  
A. Yu. Nikolaev ◽  
E. N. Koukaras ◽  
...  
Keyword(s):  
Band Gap ◽  
Near Infrared ◽  
Organic Photovoltaic ◽  
Low Band Gap ◽  
Design And Synthesis ◽  
Photovoltaic Application

Two D–A copolymers, F1 and F2, with fluorene and thiazole units were substituted, respectively, on a thiadiazoloquinoxaline (TDQ) unit to enhance the electron-accepting strength of TDQ.

Optical limitations in thin-film low-band-gap polymer/fullerene bulk heterojunction devices

2007 ◽  
Vol 91 (8) ◽  
pp. 083503 ◽  
Author(s):  
Nils-Krister Persson ◽  
Xiangjun Wang ◽  
Olle Inganäs
Keyword(s):  
Thin Film ◽  
Band Gap ◽  
Bulk Heterojunction ◽  
Low Band Gap ◽  
Heterojunction Devices ◽  
Low Band Gap Polymer
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