Abstract
Synthetic perovskites with photovoltaic properties open a new era in solar photovoltaics. Due to high optical absorption perovskite-based thin-film solar cells are usually considered as fully absorbing solar radiation on condition of ideal blooming. However, it is not really so. The analysis of the literature data has shown that the absorbance of all photovoltaic pervoskites has the spectral hole at infrared frequencies where the solar radiation spectrum has a small local peak. This absorption dip results in the decrease of the optical efficiency of thin-film pervoskite solar cells and closes the ways of utilising them at this range for any other applications. In our work we show that to cure this shortage is possible complementing the basic structure by an inexpensive plasmonic array.
Highlights
This synthetic perovskites are materials with chemical formula ABX3 whose molecular crystal lattices are cubic, orthorhombic and tetragonal [1], where A is an organic molecule called large cation ( CH3NH3+, NH2CH = NH + 2, etc.); B is the metal cation; X can be I, Br, Cl or F (BX3 is a metal halide)
Synthetic perovskites with photovoltaic properties open a new era in solar photovoltaics
This spectrum implies that 3% of the solar radiation transmitted to the perovskite is lost
Summary
Perovskite compounds are mechanically amorphous [1] Their synthesis is a cheap low-temperature chemical process [1]. Since that initial work, where the record (for that time) efficiency was obtained for a dye-sensitized solar cell, the efficiency of perovskite-based solar cells has grown by an order of magnitude [3]. This huge progress achieved in 6 years allows researchers to claim a new era in solar photovoltaics when the solar energy is becoming a really mass product due to perovskites [4]
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