Influence of the spatial photocarrier generation profile on the performance of organic solar cells

Thickness-dependent internal quantum efficiency of narrow band-gap polymer-based solar cells

“…It should be mentioned that Mescher et al [33] have done a study on the influence of power conversion efficiency upon the change of absorption profile shapes (centered and peripheral) in combination with the drift and diffusion model. They concluded that the spatial distribution of CCs can strongly affect the electrical characteristics of solar cells.…”

Narrowband light detection via internal quantum efficiency manipulation of organic photodiodes

“…1a-d, which show the device structure, photo-generated carrier distribution profile, and the EQE and absorption spectra of the photo-active layers, respectively. Although the figures are schematics for illustrative purposes, knowledge of the optical constants (n and k see Methods) of all layers in the diode structure allows one to accurately simulate the actual optical field distributions, EQE and absorption using a transfer matrix analysis 29,39,40 . In this case the PCDTBT:PC70BM optical constants are used to demonstrate the concept.…”

Hot‐Pressed Hybrid Electrodes Comprising Silver Nanowires and Conductive Polymers for Mechanically Robust, All‐Doctor‐Bladed Semitransparent Organic Solar Cells

“…For illumination through the top electrodes, V OC =0.73 V, J SC =7.9 mA cm −2 , and FF=53 % led to a somewhat lower PCE=3.1 %. We attribute the difference in J SC to different optical field distributions within the device, stemming from different interference patterns under illumination through the top and bottom electrodes, and hence different charge carrier generation profiles . Such differences can originate from the asymmetry of the device architecture that is induced by the ZnO layer between the bottom electrode and the absorbing layer.…”

“…We interference patterns under illumination through the top and bottome lectrodes,and hence different charge carrier generation profiles. [40] Such differences can originate from the asymmetry of the devicea rchitecture that is induced by the ZnO layer between the bottom electrode and the absorbing layer. Besides their competitiveo ptoelectronic performanceo nt he PET foil and photoactive areas beyond the typicall ab-size, the all-solution-processed solar cells reported herein stand out with their homogenous visual impression in the absence of bus bars ( Figure 5), which may promotef uture consumer acceptance.T he lack of visible conductingg rids or bus bars is an often-underestimated prerequisite,f or example,f or windowi ntegration and automobile roofs.T heir correlated transparency color temperature( CCT) = 6765 Ki sv ery close to the daylight spectrumD 65 (CCT = 6504 K) and the transparency color rendering index CRI = 91 reflects an excellent color neutrality (chromaticity distance to the Planckian locus in the CIE 1960 diagram:DC= 0.017).…”