Structural, electrical and optical properties of hetrostructured MoS2/ZnO thin films for potential perovskite solar cells application

Room temperature exciton formation and robust optical properties of CVD-grown ultrathin Bi2O2Se crystals on arbitrary substrates

“…According to the literature, the change in absorption coefficients and the optical bandgap induced by strain can influence the semiconductor refractive index, which is crucial for optical devices. 47 The refractive index (n) of the as-grown Bi 2 O 2 Se sample can be correlated with the optical bandgap following the equation 48,49 n ¼ 3:59 À log E g ; ð1Þ E g is the optical bandgap of the semiconductor in eV. The estimated refractive indices of Bi 2 O 2 Se crystals are 3.378, 3.375, 3.373, and 3.370, 3.367 on different substrates, e.g., mica, SiO 2 , sapphire, glass, and quartz, respectively.…”

“…According to the literature, the change in absorption coefficients and the optical bandgap induced by strain can influence the semiconductor refractive index, which is crucial for optical devices. 47 The refractive index ( n ) of the as-grown Bi 2 O 2 Se sample can be correlated with the optical bandgap following the equation 48,49 n = 3.59 − log E g ,…”

Effect of Molybdenum Disulphide Thin Films on Enhancing the Performance of Polycrystalline Silicon Solar Cells

“…The increase in scattering of electron-phonon leads to a decrease in PCE of the solar cells. Due to the reduction in mobility and charge carrier concentration, there is a declined PCE of solar cell [34,35]. Hence, MoS 2 acts as an excellent antireflective material for augmenting the PCE of the solar cell.…”

“…The MoS 2 was synthesized using the sol-gel method which enables us to produce high-quality thin films with low complexity [33]. Synthesized MoS 2 holds energy band gap of 1.35 eV and hence finds out the applications in detection of light and gas, energy storage systems [34], energy harvester, perovskite solar cells [35], optoelectronics, etc. [36].…”

MICROCONTROLLER BASE SPIN COATING DESIGN AND IoT DATA MONITORING AND STORAGE

“…This method is very easy, so it is widely used for the process of making thin films. In previous studies, the manufacture of ZnO thin films at 4000 rpm resulted in good transparency of 92% and its application to solar cells [9]. The problem that arises in the spin coating tool in the laboratory is the determination of the RPM value which is only limited to a few variations.…”