Morphologic improvement of the P3HT: Indene-C60 bis-adduct(ICBA) blend film with mixed solvent in inverted polymer solar cells

Author

Lin, Shang-Hong ; Lang, Shian ; Sun, Jen-Yu ; Lin, Ching-Fuh

Author_Institution

Grad. Inst. of Photonics & Optoelectron., Taiwan Univ., Taipei, Taiwan

fYear

2012

fDate

3-8 June 2012

Abstract

To enhance the open circuit voltage, a new acceptor material Indene-C60 bisadduct (ICBA) has been reported. The published literatures have been reported that almost all groups dissolve the ICBA and P3HT in DCB. However, the solubility of ICBA in DCB is not good that results in high leaking current and lowers the open circuit voltage on inverted structure of polymer solar cells. We use mixed solvent of DCB and CB to improve the solubility of the active layer, add polymer polyvinylcarbazole (PVK) to reduce the horizontal phase separation, and control the dried time of active layer by using different ratio of DCB and CB. As a result, the open circuit voltage of inverted polymer solar cells is enhanced from 0.66V to 0.82V and the power conversion efficiency (PCE) enhance from 2.6% to 3.81%.

Keywords

fullerenes; phase separation; polymer blends; solar cells; solubility; DCB; ICBA blend; ICBA solubility; P3HT:indene-C60 bis-adduct blend film; PCE; acceptor material; active layer solubility; efficiency 2.6 percent to 3.81 percent; horizontal phase separation; inverted polymer solar cells; open circuit voltage; polymer polyvinylcarbazole; power conversion efficiency; voltage 0.66 V to 0.82 V; Polymers; Indene-C60 bisadduct (ICBA); horizontal phase separation; inverted polymer solar cells; mixed solvent; polyvinylcarbazole (PVK);

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2012 38th IEEE

Conference_Location

Austin, TX

ISSN

0160-8371

Print_ISBN

978-1-4673-0064-3

Type

conf

DOI

10.1109/PVSC.2012.6318165

Filename

6318165