Cadmium selenide (CdSe) quantum disks (QDs) have been synthesized for application in luminescent solar concentrators (LSCs). Luminescence tuning and reabsorption reduction of the QDs were achieved by controlling their size using a hot injection method. The overlap of the absorption and photoluminescence spectra of the as-prepared CdSe QDs was negligible. The as-prepared CdSe QDs were incorporated into polymethylmethacrylate without aggregation and luminescence quenching. The obtained highly transparent composites with non-affecting light-emitting properties were used as LSCs. The placement of a CdSe QDs doped LSC prototype (10 × 1 × 0.1 cm) on a Si-cell resulted in a 201% increase in the electrical power output of the Si-cell compared with that of the bare Si-cell.
Based on the energy flow inside phosphor materials, a prediction model and its modeling method for the thermal effect and optical properties of phosphor converted white light emitting diode (LED) are proposed in this paper. With the phosphor characteristics (excitation wavelength, phosphor temperature, thickness, light absorption and conversion coefficients), it is possible to accurately quantify the heat dissipation coefficient and optical power of the white LED device, and then to estimate the emission power and luminous flux. The modeling consists of a series of optical and thermal evaluation, which are simple for LED designers to comply. Using samples of LED sources and phosphor material, the proposed prediction model has been validated in experiments, where good agreements between calculations and practical measurements have been achieved.
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