Preparation and characterization of CdSe and PbSe nanoparticles via aqueous solution for nanoparticle-based solar cells

We discuss the electronic properties of quantum-confined nanocrystals. In particular, we show how, starting from the discrete molecular states of small nanocrystals, an approximate band structure (quasi-band structure) emerges with increasing particle size. Finite temperature is found to broaden the discrete states in energy space forming even for nanocrystals in the quantum-confinement regime quasi-continuous bands in k-space. This bands can be, to a certain extend, interpreted along the lines of standard band structure theory, while taking also finite size and surface effects into account. We discuss this on various prototypical nanocrystal systems.

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“…Another prominent class of nanoparticle are metal-selenide NCs 39 . Here we consider lead selenide and cadmium selenide, PbSe-NC with (Fig.…”

Section: Resultsmentioning

confidence: 99%

Quasi-band structure of quantum-confined nanocrystals

Buerkle

Lozac’h

Mariotti

et al. 2023

Sci Rep

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“…Apart from the mentioned studies, starch has also been used as complexing agent on the sol–gel preparation of nanosized particles of itrium orthovanadate doped with disprosium and with samarium cations, with potential applications as phosphors in high‐definition flat displays as well as in the preparation of photoluminescent ZnO or CdSe NPs. Starch is demonstrated to play a key role as a template for NPs stabilization and to avoid aggregation; however, in the end of the procedures, it was removed either by calcination or by washing and therefore did not play any active role in the final optical properties of the final material.…”

Section: Other Biopolymer‐derived Luminescent Materialsmentioning

confidence: 99%

An overview of luminescent bio‐based composites

Pinto

Carlos

Marques

et al. 2014

J of Applied Polymer Sci

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The development of inorganic/organic composite materials represents a fast-growing interdisciplinary area in materials science and engineering. In this topic, a key idea is the production of composites comprising biopolymers and functional inorganic phases that could replace conventional materials in several high-technology applications. Following this concept, the use of different polymers from renewable sources, such as cellulose, starch, alginate, and chitosan, have gained great relevance because of their renewable nature, potential biocompatibility, and biodegradability, as well as specific physicochemical properties. The combination of these biopolymers with different fillers (including inorganic nanoparticles (NPs), clusters, or ions) allows the design of innovative biobased materials with specific and/or improved properties, namely, optical, mechanical, and barrier properties, luminescence, and biological properties (as antimicrobial activity and biocompatibility). This review will focus on the most important synthetic approaches, properties, and applications of luminescent bio-based composites obtained by combining different biopolymers and fillers.

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Characterization of Sol–Gel Materials by Optical Spectroscopy Methods

Almeida

2015

The Sol‐Gel Handbook

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Preparation and characterization of CdSe and PbSe nanoparticles via aqueous solution for nanoparticle-based solar cells

Cited by 11 publications

References 38 publications

Quasi-band structure of quantum-confined nanocrystals

Quasi-band structure of quantum-confined nanocrystals

An overview of luminescent bio‐based composites

Characterization of Sol–Gel Materials by Optical Spectroscopy Methods

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