A new look at silicon solar cell performance
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Quantum dots as photon down-conversion materials
2023, Advances in Electronic Materials for Clean Energy Conversion and Storage ApplicationsBrief history and scope of phosphor
2023, Phosphor Handbook: Process, Properties and ApplicationsEfficient NIR quantum cutting of Eu<sup>3+</sup>/Yb<sup>3+</sup> co-doped LiLa(PO<inf>3</inf>)<inf>4</inf> for luminescent solar concentrators
2023, Optical MaterialsCitation Excerpt :This property is fundamentally limited by the band gap energy (Eg) of the semiconductor from which the PV device is manufactured. Therefore, the conventional single-junction solar cells can convert only photons with energy close to the band gap efficiently [5,6]. About 70% of the total energy was lost due to thermalisation and transmission phenomena, which are usually termed as spectral mismatch [7].
A comprehensive study of renewable energy sources: Classifications, challenges and suggestions
2022, Energy Strategy ReviewsCitation Excerpt :Down conversion of high energy photon is essentially a method by the use of multiple electron-hole pairs per photon to breakdown high energy photons into at least two photons with lower energy [56]. In conventional solar cells, the excess high energy photons are wasted [57]. Hence, down conversion is proposed to reduce the losses of energy from solar cells by introducing electron-hole pairs with double band-gap energy of solar cells [58].
Efficient upconversion in Er<sup>3+</sup> doped Y<inf>2</inf>O<inf>3</inf>/Si thin film deposited by aerosol UV-assisted MOCVD process
2016, Journal of LuminescenceCitation Excerpt :Photons with energy (Eph) larger than the bandgap are absorbed, but the excess energy (Eph−Eg) is lost due to thermalization of the generated electrons. These fundamental spectral losses are approximately 50% [9]. Several approaches have been suggested to overcome these losses, e.g., multiple stacked cells [10], intermediate bandgaps [11], multiple exciton generation [12], quantum dot concentrators [13,14] and spectral converters, the latter being down- and upconverters [15,16] and downshifters [17,18].
Rare earth ions doped phosphors for improving efficiencies of solar cells
2013, EnergyCitation Excerpt :In the late 1970s, Hovel et al. realized that spectral downshifter was proposed for improving the spectral responses to UV/blue light of solar cells [186]. A downshifter which consists of luminescent materials embedded in a transparent matrix could be used to deduce recombination losses of a PV device as mentioned above and the performance of such device could be enhanced by shifting the spectrum to wavelengths with a higher efficiency [13]. A great large number of materials show such photoluminescence properties [18], which can be used to overcome the poor spectral response to short wavelength light of PV device although such a solar cell with a wavelength downshifting converter does not have a larger efficiency than a single-junction solar cell [18].