Among its physical properties the very high absorption coefficient and a suitable energy bandgap (Eg≈0.95 eV) for photovoltaic energy conversion also its nontoxicity and its composition from abundant elements were considered as particular advantages of pyrite.
The proposed structure shows high absorption coefficient in the said wavelength range with a maximum of 99.9% around 88 μm.
The underlying physical principle exploited by our device is measurement of back scattered light at wavelengths for which water has high absorption coefficient (e.g., ~950nm) via an array of light source and detectors with fixed distances.
It also counts among its advantages a relatively low effective mass, high carriers' mobility, a high absorption coefficient along with good radiation tolerance.
This is mainly because most of the optical materials in one hand have high absorption coefficient and their optical properties degrade constantly with time under VUV irradiation.
The improved performance of fabricated photodetector was ascribed to high quality rutile-nanocrystalline TiO2 films with very high absorption coefficient (~6×105 cm−1) and excitonic localized states.
This work highlights the combination of QDs with high absorption coefficient 1D architectures possessing efficient charge transport for constructing high efficiency solar cells.
The as-prepared CuInS2 films are of high absorption coefficient of 2.65 × 105 cm−1 at 400 nm and 1.7 × 105 cm−1 at 600 nm.
We fabricated THz-wave detectons on LiNbO3 substrates that have a high absorption coefficient for the frequency range of 1012 Hz.
Copper (I) oxide shows a high absorption coefficient at around 438 nm in bulk and ensembles, has more than 10% energy conversion efficiency and a quantum yield of 6.6 × 10−2% when excited at 360 nm and emission at 493 nm13 which makes this material a promising candidate for various photoelectronic applications, such as photovoltaic cells and photo-capacitors13,14 photo-capacitors13,14
We calculated the complex permittivity of materials required to achieve a single-layer electromagnetic absorber with a high absorption coefficient in the 60-GHz band.
