Abstract
It is necessary to develop semitransparent photovoltaic cell for increasing the energy density from sunlight, useful for harvesting solar energy through the windows and roofs of buildings and vehicles. Current semitransparent photovoltaics are mostly based on Si, but it is difficult to adjust the color transmitted through Si cells intrinsically for enhancing the visual comfort for human. Recent intensive studies on translucent polymer- and perovskite-based photovoltaic cells offer considerable opportunities to escape from Si-oriented photovoltaics because their electrical and optical properties can be easily controlled by adjusting the material composition. Here, we review recent progress in materials fabrication, design of cell structure, and device engineering/characterization for high-performance/semitransparent organic and perovskite solar cells, and discuss major problems to overcome for commercialization of these solar cells.
Highlights
Rapid increase in industrialization and world population has sparked a strong demand for sustainable energy sources that can replace fossil fuels
This review focuses on the recent studies of semitransparent organic solar cells (OSCs) (STOSCs) and semitransparent
The transmittance required for semitransparent photovoltaic cells depends on where they are used, but it is generally accepted that 20–30% average visible light transmittance (AVT) is the minimum requirement for the window applications [86]
Summary
Rapid increase in industrialization and world population has sparked a strong demand for sustainable energy sources that can replace fossil fuels. Semitransparent PVMs employing using organic solar cells (OSCs) and perovskite solar cells (PSCs) are recently highly attractive due to their high absorption coefficient. PSCs showed a certified efficiency of 22.7% due to their high extinction coefficient [18], high mobility of charge carriers [19], small binding energy of excitons [20], long diffusion length of charge carriers [21], and solution processability [22]. Indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/PhanQ: phenyl-C61 -butyric acid methyl ester (PCBM)/buckminsterfullerene (C60 )-surfactant/Ag. Ag NWs/aluminum doped ZnO (AZO)/P3HT: polymer poly[(4,40-bis(2-ethylhexyl) dithieno[3,2-b:20 ,30 -d]-silole)-2,6-diyl-alt-(4,7-bis(2-thienyl)-2,1,3-benzothiadiazole)-5,5 0 -diyl]. FTO/ZnO/ PhanQ: phenyl-C61 -butyric acid methyl ester (PCBM)//MAPbI3 /spiro-OMeTAD/MoO3 /In2 O3 :H
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