Effect of Extended Extinction from Gold Nanopillar Arrays on the Absorbance Spectrum of a Bulk Heterojunction Organic Solar Cell

Energies

Shu-Ju Tsai²  Mihaela Ballarotto¹  Hung-Chih Kan²  Raymond J. Phaneuf² 

[1] Laboratory for Physical Sciences, College Park, MD 20740, USA; E-Mail:;Department of Materials Science and Engineering, University of Maryland, College Park, MD 20740, USA; E-Mails:

关键词: organic solar cells;    plasmonics;    nanostructures;   

DOI  :  10.3390/en8031547

来源: mdpi

【 摘 要 】

We report on the effects of enhanced absorption/scattering from arrays of Au nanopillars of varied size and spacing on the spectral response of a P3HT:PCBM bulk heterojunction solar cell. Nanopillar array-patterned devices do show increased optical extinction within a narrow range of wavelengths compared to control samples without such arrays. The measured external quantum efficiency and calculated absorbance, however, both show a decrease near the corresponding wavelengths. Numerical simulations indicate that for relatively narrow nanopillars, the increased optical extinction is dominated by absorption within the nanopillars, rather than scattering, and is likely dissipated by Joule heating.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.