Light engineering for bifacial transparent perovskite solar cells with high performance

All-Nanoparticle SnO2/TiO2 Electron-Transporting Layers Processed at Low Temperature for Efficient Thin-Film Perovskite Solar Cells

“…This decrease is similar or even lower than for other bifacial perovskite solar cells whose semitransparent contact electrode is made of gold 41,47 or a different material. 48,49 Such performance…”

“…The decrease in the J sc in comparison to the results obtained when the devices are illuminated from the ITO is less than 24% for devices made of 280 nm thick perovskite layers. This decrease is similar or even lower than for other bifacial perovskite solar cells whose semitransparent contact electrode is made of gold , or a different material. , Such a performance shows that devices fabricated with the configuration proposed in this paper have a potential application as bifacial solar cells, although further work may need to be carried out to further optimize the optoelectronic properties of the metal-dielectric contact. Those results can be also found in Figure S5 and Table S1.…”

Bifacial, Color-Tunable Semitransparent Perovskite Solar Cells for Building-Integrated Photovoltaics

“…A major challenge in realizing high-performance ST-PSCs is the replacement of the opaque metal electrode with a transparent one, which allows light transmission without compromising the charge collection efficiency. Recently, different strategies have been implemented to develop a good semitransparent rear electrode, including the use of thin metal layers (Au, Ag, Cu/Au bilayer), silver nanowires, graphene, conductive polymers (PEDOT/PSS), and dielectric/metal/dielectric multilayer stuctures . The best performances so far have been achieved by using transparent conductive oxides (TCOs), such as indium tin oxide (ITO), indium-doped zinc oxide, , and aluminum-doped zinc oxide .…”

Bifacial Diffuse Absorptance of Semitransparent Microstructured Perovskite Solar Cells

“…STSCs are inherently bifacial devices, meaning that irradiances at both the top and bottom sides can contribute to the device performance. Bifacial operation of STSCs has also witnessed increasing interest in the last years. − Optical and photovoltaic parameters of bifacial STSCs, namely, reflectance ( R ) and transmittance ( T ), external quantum efficiency, and PCE under AM 1.5G standard irradiation are usually determined under direct irradiance at small angles of incidence, as illustrated in Figure a; reflectance and transmittance are then combined together to infer the absorptance, A = 1 – R – T . In real bifacial applications, however, irradiance on the inside of the building envelope is generally diffuse and the contribution of diffuse irradiance to the overall external irradiance can also be dominant, for example, in smart applications such as semitransparent inner walls, where the two sides are equivalent, or whenever major shading effects are present on the outside.…”