Semitransparent Perovskite Solar Cells with Dielectric/Metal/Dielectric Top Electrodes

Abstract

A semitransparent perovskite solar cell (PSC) with a dielectric/metal/dielectric (DMD) multilayer film as the top transparent electrode is investigated. Through adjusting the thickness and the deposition rate of Ag and WO3 layers, a transparent electrode with a low sheet resistance of 7 Ω sq−1 and high average visible transmittance (AVT) of 73% in the visible wavelength range of 400–800 nm is obtained. Using the resultant DMD film as the top transparent electrode and different bandgap perovskites of CH3NH3PbI3 (MAPbI3), CH(NH2)2PbI3 (FAPbI3), and FA0.5MA0.38Cs0.12PbI2.04Br0.96 as the optical active layer, a solar cell with a device architecture of ITO/SnO2/perovskite/spiro‐OMeTAD/MoO3/Ag/WO3 is fabricated. A series of efficient semitransparent PSCs with high transmittance are achieved.

Metal halide perovskite-based flexible tandem solar cells: next-generation flexible photovoltaic technology

“…Besides TCOs, electrode materials that have been utilized in other types of flexible solar cells may also be suitable for flexible NIR transparent PSCs. These electrodes include conductive polymers, 63 thin metallic layers, 64 a stack of a dielectric-thin metallic layer-dielectric (DTD) structure, 65 transparent carbon-based electrodes (graphene 30 and nanotubes 66 ) and silver nanowires, etc. with an average transmittance of 78% between 800 and 1000 nm and a PCE of 12.2% on an area of 0.213 cm 2 (Fig.…”

Recent Progress on Advanced Optical Structures for Emerging Photovoltaics and Photodetectors

“…The DMD structures in ST‐PSCs have been similar to those in ST‐OPVs. [ 33,45,48,49,73,74,78,79,117–122 ] For example, Hanmandlu et al introduced a 2,9‐dimethyl‐4,7‐diphenyl‐1,10‐phenanthroline (BCP)/Ag/MoO 3 transparent electrode for bifacial PSCs (Figure 2d). [ 79 ] In addition to providing a high dielectric constant, the BCP also functioned as a diffusion buffer layer between the electron transport layer (ETL) and the Ag electrode.…”

“…Xie et al reported an ST‐PSC having a MoO 3 /Ag/WoO 3 electrode, with the WO 3 enhancing the transmittance in the long wavelength region (Figure 2f). [ 33 ] Their best device featured FA 0.5 MA 0.38 Cs 0.12 PbI 2.04 Br 0.96 as the active layer and provided a PCE of 13.16% and an AVT of 16.55%.…”

“…As a selected example, Xie et al demonstrated a ST‐PSC device featuring MoO 3 /Ag/WO 3 as the transparent top electrode and displaying a PCE of 15.33% and an AVT of 12.18%. [ 33 ] Liu et al used an oblique incidence decoupling technology to obtain a light use efficiency (LUE) of 4.83%—at the time, the record for an OPV. [ 34 ] This record was overcome by Forrest and coworkers, [ 111 ] who demonstrated an ST‐OPV having a PCE of 10.8% and a visible transparency of ≈50%.…”

“…Plot of PCE with respect to AVT for ST‐OPVs and ST‐PSCs reported in the literature. [ 1,9–12,15,17,18,20–22,24,33–110 ] …”