Efficiency Enhancement in Organic Solar Cells With Extended Resonance Spectrum of Localized Surface Plasmon

Author

Fang Liu ; Di Qu ; Qi Xu ; Xujie Pan ; Kaiyu Cui ; Xue Feng ; Wei Zhang ; Yidong Huang

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

5

Issue

4

fYear

2013

fDate

Aug. 2013

Firstpage

8400307

Lastpage

8400307

Abstract

The efficiency enhancement of thin film hetero-junction organic solar cells (OSCs) with Au-nanopaticles (Au-NPs) at the interface between the anode and active layers is studied theoretically and experimentally. It is demonstrated that the interface-Au-NPs could effectively extend the spectrum of light absorption enhancement based on the localized surface plasmon, which is revealed by the incident photon-to-current efficiency with photocurrent increased at both the long (λ₀ = 600 ~ 700 nm) and short (λ₀ = 400 ~ 500 nm) wavelength regions. The experiment results also indicate that the efficiency improvement of OSCs is related to the size and concentration of the Au-NPs. The optimized power conversion efficiency enhancement is about 25%.

Keywords

gold; localised states; nanoparticles; organic semiconductors; particle size; photoconductivity; semiconductor heterojunctions; semiconductor thin films; semiconductor-metal boundaries; solar cells; surface plasmon resonance; Au; anode layers; extended resonance spectrum; incident photon-to-current efficiency; light absorption enhancement; localized surface plasmon; long wavelength regions; nanopaticles; photocurrent; power conversion efficiency; short wavelength regions; thin film hetero-junction organic solar cells; wavelength 400 nm to 500 nm; wavelength 600 nm to 700 nm; Absorption; Anodes; Metals; Nanoparticles; Photonics; Photovoltaic cells; Plasmons; (040.5350) photovoltaic; (250.5403) Plasmonics;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2013.2271715

Filename

6555816