Photoelectroconversion by Semiconductors: A Physical Chemistry Experiment

Abstract

A physical chemistry experiment illustrating photochemistry, cyclic voltammetry, the properties of semiconductors, and surface chemistry is described. The experiment consists of constructing a liquid-junction photochemical cell, determining the cell parameters, then modifying the surface of the electrode to enhance the conversion efficiency of the cell. The students will learn some fundamental physical and chemical principles related to light and electricity interconversion as well as the properties of semiconductors. The experiment can also be developed into an undergraduate research or independent study project.

Plastic Solar Cells: A Multidisciplinary Field To Construct Chemical Concepts from Current Research

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Evaluation of Mulliken Electronegativity on CH3NH3PbI3 Hybrid Perovskite as a Thought-Provoking Activity

“…However, despite multiple research articles describing these properties and the trends they follow as a function of the atomic number, − learning through memorization can create misconceptions and confusion of basic chemical concepts that lead to low performance in science. , Therefore, some researchers have developed novel methodologies to understand the properties of elements and their periodicity through the use of didactic materials, 3D-printing technology, and discussion of fictional elements . As a complement, some articles discuss anomalous properties of elements that do not follow expected trends. , On the other hand, the teaching of solar cells often focuses on the concepts, fabrication, and characterization of solar cells − without offering the chance to discuss or deeply analyze the impacts of the properties of materials in PV applications. Therefore, we have developed a homework activity in which students can evaluate energy levels of PV materials used in state-of-the-art perovskite (CH 3 NH 3 PbI 3 ) solar cells following the Mulliken electronegativity empiric procedure .…”

Gaining Hands-On Experience with Solid-State Photovoltaics through Constructing a Novel n-Si/CuS Solar Cell

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