Electrodes for GaOHPc:PCBM/P3HT:PCBM bulk heterojunction solar cell

Influence of the Preparation Method on Planar Perovskite CH3NH3PbI3-xClx Solar Cell Performance and Hysteresis

“…The highest open circuit voltage (V OC ) values are observed for samples where the perovskite layer is made by the one-step method (for sample N4, where both EHL and HTL are doped), V OC value is 1.1 V. But for sample N1 V OC value is only 0.86 V. The power conversion efficiency (PCE) is calculated according to formula 1 [35]. FF -fill factor; EQE -external quantum efficiency for short circuit photocurrent; E phot -energy of photon, eV.…”

“…During the evaporation process the thickness of C 60 and Ag electrode was controlled by a calibrated 10 MHz quartz oscillator and frequency meter. The spectral dependencies of short circuit photocurrent external quantum efficiency (EQE) were investigated in the spectral range 370-900 nm, using a synhro-detection technique and PC controlled data storage equipment [35], [36]. The samples were illuminated by chopper-modulated monochromatic light.…”

Perovskite CH3NH3PbI3–XClx Solar Cells. Experimental Study of Initial Degradation Kinetics and Fill Factor Spectral Dependence

“…The selected light modulation period was chosen to be 6 s long, and the intensity was controlled by a calibrated Si photodiode. A constant photon flux onto our cell during the measurement of the spectral and the current-voltage dependencies was achieved by computercontrolled movements of a Thorlabs linear variable ND metallic optical filter with the correction against the Si photodiode spectral sensitivity [8].…”

“…Using the obtained spectral dependences for the EQE, the FF and the V OC , we can construct spectral dependences for the power conversion efficiency (PCE) using the following formula [8]:…”

Lanthanides in Solar Energy Conversion

“…Organic photovoltaic (OPV) cells have not been treated in a separate section in this review because there are presently very few papers describing the use of rare-earth containing materials for improving their performances: Ln III complexes (Ln ¼ Pr, Sm, Eu, Gd, Tb) have been tested as electron acceptors (Si et al, 2007), upconversion materials such as NaYF 4 :Yb,Er and MoO 3 :Yb,Er increase the photocurrent upon illumination at 975-980 nm, and Yb/Al/Se (Kaulachs et al, 2012) or Sm/Al (Yang et al, 2013) composite electrodes help increasing both the photocurrent and the power conversion efficiency. Organic photovoltaic (OPV) cells have not been treated in a separate section in this review because there are presently very few papers describing the use of rare-earth containing materials for improving their performances: Ln III complexes (Ln ¼ Pr, Sm, Eu, Gd, Tb) have been tested as electron acceptors (Si et al, 2007), upconversion materials such as NaYF 4 :Yb,Er and MoO 3 :Yb,Er increase the photocurrent upon illumination at 975-980 nm, and Yb/Al/Se (Kaulachs et al, 2012) or Sm/Al (Yang et al, 2013) composite electrodes help increasing both the photocurrent and the power conversion efficiency.…”