skip to main content

Title: Performance limits of plasmon-enhanced organic photovoltaics

We use a combination of experiment and modeling to explore the promise and limitations of using plasmon-resonant metal nanoparticles to enhance the device performance of organic photovoltaics (OPVs). We focus on optical properties typical of the current generation of low-bandgap donor polymers blended with the fullerene (6,6)-phenyl C{sub 71}-butyric acid methyl ester (PC{sub 71}BM) and use the polymer poly(indacenodithiophene-co-phenanthro[9,10-b]quinoxaline) (PIDT-PhanQ) as our test case. We model the optical properties and performance of these devices both in the presence and absence of a variety of colloidal silver nanoparticles. We show that for these materials, device performance is sensitive to the relative z-position and the density of nanoparticles inside the active layer. Using conservative estimates of the internal quantum efficiency for the PIDT-PhanQ/PC{sub 71}BM blend, we calculate that optimally placed silver nanoparticles could yield an enhancement in short-circuit current density of over 31% when used with ∼ 80-nm-thick active layers, resulting in an absolute increase in power conversion efficiency of up to ∼2% for the device based on optical engineering.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [3] ;  [2]
  1. Department of Physics, University of Washington, Seattle, Washington 98195 (United States)
  2. (United States)
  3. Department of Chemistry, University of Washington, Seattle, Washington 98195 (United States)
  4. Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195 (United States)
Publication Date:
OSTI Identifier:
22311164
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; CONVERSION; CURRENT DENSITY; ELECTRICAL FAULTS; EQUIPMENT; FULLERENES; NANOPARTICLES; OPTICAL PROPERTIES; ORGANIC MATTER; PHOTOVOLTAIC EFFECT; POLYMERS; QUANTUM EFFICIENCY; SILVER; SIMULATION