First-principle calculation of solar cell efficiency under incoherent illumination

Reflectance analysis under solar illumination

The paper describes reflectance analysis of real images taken in an outdoor environment. In the past, the fundamental difficulties involved in analyzing outdoor images have prevented the use of traditional techniques for reflectance analysis such as shape from shading and photometric stereo. Those difficulties include: 1. multiple reflection components due to two light sources of different spec...

Solar Cell Efficiency Measurements

The calibration and efficiency measurement procedures followed by the PV Devices and Measurements Branch at the Solar Energy Research Institute (SERI) are presented. The use of spectral irradiance measurements to calibrate reference cells used in these measurements has reduced the uncertainty in the calibration number to less than 1%. The use of the spectral mismatch index can reduce the errors...

Noise Characteristic of Solar Cells under Various Illumination

Research of stationary, transport and noise characteristics of different type of PN junctions shows that illumination of PN junction can have influence not only on origin photocurrent and photovoltage, but also to noticeable changes of space charge regions quality. This phenomenon was observation so only on heterojunction based on AB compounds [1]-[2]. Simultaneously no one influence of illumin...

Theoretical Calculation of the Efficiency Limit for Solar Cells

Lattice thermal conductivity of borophene from first principle calculation

The phonon transport property is a foundation of understanding a material and predicting the potential application in mirco/nano devices. In this paper, the thermal transport property of borophene is investigated by combining first-principle calculations and phonon Boltzmann transport equation. At room temperature, the lattice thermal conductivity of borophene is found to be about 14.34 W/mK (e...