Luminescence Nanocrystals for Solar Cell Enhancement

Abstract

Semiconductor nanocrystals (NCs) prepared by wet-chemical routes have been proposed as an attractive candidate for fabrication of the third-generation thin-film solar cells due to their quantum confinement effects and excellent dispersion ability in polymer films. However, to date, a solar cell incorporating semiconductor NCs in the photoactive layer still has rather low efficiency due to the low carrier mobility of the non-continued NC phase and the possible radiative recombination in NCs. To avoid these disadvantages, NCs have been proposed and applied as a luminescent species in a passive photon converting layer to modify the solar spectrum before the light enters the photovoltaic device. Photon conversion processes, including up-conversion, down-conversion, and down-shifting, have been observed in various colloidal NC samples and have great potential to enhance photovoltaic performance when applied to the existing single-junction solar cells or narrow-band molecular-based devices.

Studying of Perovskite Nanoparticles in PMMA Matrix Used As Light Converter for Silicon Solar Cell

“…The one of the most straightforward methods of quantum dots application in photovoltaics is their utilization for light conversion in down-conversion (DC) process, which is also known as quantum-cutting [19][20][21][22][23][24][25]. The down-converter transforms one high energy photon into two or more photons of lower energy but simultaneously higher than the bandgap.…”

Nanophosphor Coatings: Technology and Applications, Opportunities and Challenges

“…Semiconductor quantum dots are not dealt with directly in this article although certain conclusions could also be applied to them. Interested readers can be directed to the reviews of physics and applications of quantum dots, such as Samokhvalov et al (2013), Geszke-Moritz and Moritz (2013), Bera et al (2010), Gaponik et al (2010), and Liu et al (2010). We will also not devote much attention to phosphor powders with particles of intermediate size between 100 nm and 1-2 mm.…”

Preparation and Upconversion Emission Modification of Yb, Er Co-Doped Y<SUB>2</SUB>SiO<SUB>5</SUB> Inverse Opal Photonic Crystals

“…12 The tailoring of spontaneous emissions by the photonic crystals could not only open a possibility to create new fundamental quantum processes including spontaneous symmetry breaking and changes in the selection rules of electronic transitions, but also result in technology breakthroughs for the next generation photonic devices such as highly efficient solar cells and low-threshold lasers. [13][14][15][16][17] Organic dyes, quantum dots, or rare-earth ion-doped compounds are commonly used as the luminescent source to study the effect of the photonic band gap on spontaneous emissions. Among these luminescent sources, rare-earth ions are advantageous because their emission bands derived from intra-4f transitions are * Author to whom correspondence should be addressed.…”