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Solar-cell efficiencies of laboratory-scale devices using these materials have increased from 3.8% in 2009 [3] to 25.7% in 2021 in single-junction architectures, [4] [5] and, in silicon-based tandem cells, to 29.8%, [4] [6] exceeding the maximum efficiency achieved in single-junction silicon solar cells. Perovskite solar cells have therefore ...
The main obstacle to viable tin perovskite solar cells is the instability of tin's oxidation state Sn 2+, which is easily oxidized to the stabler Sn 4+. [10] In solar cell research, this process is called self-doping, [11] because the Sn 4+ acts as a p-dopant and reduces solar cell efficiency.
Other promising materials and technologies for indoor photovoltaics include thin-film materials, III-V light harvesters, organic photovoltaics (OPV), dye-sensitized solar cells and perovskite solar cells. Thin-film materials, specifically CdTe, have displayed good performance under low light and diffuse conditions, with a band gap of 1.5 eV. [6]
Perovskite solar cell technology can be tuned to red, green and blue by changing the metallic nanowire thickness to 8, 20 and 45 nm respectively. [19] Maximum power efficiencies of 10.12%, 8.17% and 7.72% were achieved by matching glass reflectance to the wavelength that the specific cell is designed to most optimally transmit.
Organic solar cell; Perovskite solar cell; Quantum dot solar cell; The achievements in the research of perovskite cells, especially, have received tremendous attention in the public as their research efficiencies recently soared above 20 percent. They also offer a wide spectrum of low-cost applications.
However, the solar cells are prone to degradation due to volatility of the organic [CH 3 NH 3] + I − salt. The all-inorganic perovskite cesium lead iodide perovskite (CsPbI 3) circumvents this problem, but is itself phase-unstable, the low temperature solution methods of which have only been recently developed. [47]