Cells with luminescent solar

Luminescent Solar Concentrators A high efficiency Si concentrator solar cell for use with prismatic covers has been described,46 and an LSC based upon PMMA doped with U02 is reported to be suitable for use with solar cells.47 Efficiencies of 24.8% have been achieved using a GaAs-Fresnel lens concentrator solar cell.48... 

Most of the chapters in the third section are concerned with photovoltaic (PV) applications (conversion of light into electrical energy). Because of the diffuse nature of solar energy, the photovoltaic collection devices must be very large or else the light that strikes them must be concentrated. The first chapter in this section gives an overview of luminescent solar concentrators that can be used with the PV collectors. Most PV collectors or modules are multilayered systems containing a photovoltaic cell element. The next four chapters consider the use of various plastics as encapsulant or pottant materials in the PV modules. 

Essentially, nano-ZnO is an inorganic material of significant interest in nanotechnology, used particularly in gas sensors, solar cells, and luminescent materials. It is a nonvolatile, nonhygroscopic, odorless, and white crystalline solid with versatile properties. It can be easily synthesized in the laboratory by various methods including sol-gel, precipitation, thermal, and pyrolysis techniques and is characterized by... 

Fig. 8.14 Illustration of principle of luminescent soltir concentrator with. The solar cell is not included in the illustration and would butt-up to the edge to maximise efficiency of light collection...

For metal, dielectric and semiconductor films fabrication, optical and silica glass are popular substrate materials because of their availability, cost-effectiveness, and inert character, i.e., they are stable in the required temperature range for common photonic, optoelectronic and photovoltaic applications, they do not chemically react with the prepared films, and the hard plane surface makes the formation of optically smooth thin films fairly easy. Generally, it is preferable to form films by a simple, low-temperature, inexpensive and environment friendly method. Sol-gel technique and thermal evaporation is found suitable for the preparation of film parts of efficient solar cells [1], emitters, transformers [2], detectors and modulators of light [3], as well as optically stimulated luminescence dosimeters [4]. Here, we present the experimental data on the resistance to high-power optical and ionizing irradiations of the undoped components of film compositions with nanociystais. 

---