Review of Luminescence-Based Light Spectrum Modifications Methods and Materials for Photovoltaics Applications

Abstract

The dynamic development of photovoltaic and photo-sensitive electronic devices is constantly stimulated by material and technological advances. One of the key concepts that is highly recommended for the enhancement of these device parameters is the modification of the insulation spectrum. Practical implementation of this idea, although difficult, may be highly beneficial for photoconversion efficiency, photosensitivity range extension, and their cost reduction. The article presents a wide range of practical experiments leading to the manufacturing of functional photoconverting layers, dedicated to low-cost and wide-scale deposition methods. Various active agents, based on different luminescence effects as well as the possible organic carrier matrixes, substrate preparation and treatment procedures, are presented. New innovative materials, based on their quantum effects, are examined. The obtained results are discussed in terms of the application in new generation photovoltaics and other optoelectronic elements.

Influence of Intermolecular Structural Effects on Radiative Efficiency in Xanthene-Based Carboranyl Luminophores

“…The development of organic and organometallic luminophores simultaneously exhibiting electrochemical stability and high luminescence efficiency remains critical for various applications, including organic light-emitting diodes, − chemosensors, − and photovoltaic cells. − Such luminophores are typically constructed by connecting electron-rich donor (D) groups to electron-poor acceptor (A) groups to form D–A dyad systems − and thus induce emission based on intramolecular charge transfer (ICT) . Generally, this strategy prevents the formation of locally excited (LE) states with long radiative lifetimes, thus enhancing luminescence efficiency. ,, o -Carboranes have a three-dimensional framework with high polarizability owing to their σ-aromaticity, , a strong electron-withdrawing effect on C-substituents, − which surpasses that of fluorine, , and high thermal and electrochemical stabilities due to their closed structure.…”