Student Explorations of Quantum Effects in LEDs and Luminescent Devices

Abstract

We developed activity-based instructional units to introduce basic quantum principles to students with limited physics and mathematics backgrounds. To emphasize the practical applications of contemporary physics, we introduced concepts using the contexts of light-emitting devices such as light-emitting diodes (LEDs), fluorescent lamps, and glow-in-the-dark toys. As our standard of living becomes more dependent on the latest developments in science and technology, our students' literacy must be at a level that enables them to make educated decisions on science- and technology-related issues and their everyday applications. Students need to have at least a basic understanding of 20th-century physics and its applications in order to make informed decisions about them. Unfortunately, many physics teachers either exclude or spend very little time on modern topics such as quantum mechanics in high school physics courses.1,2 The high degree of mathematical formalism and abstract nature of quantum mechanics is frequently given as a reason for not introducing quantum physics in high school physics courses.3,4

Learning Electromagnetism with Visualizations and Active Learning

“…Students can determine the efficiency of a simplified version of real-world combustion engine and this helps them connect the abstract PV diagrams V of physics and chemistry to a real-life car engine. Escalada, Rebello and Zollman (2004) developed another package, Visual Quantum Mechanics-The Next Generation, that includes simulation, computerized tools, and instructional strategies for undergraduate physics majors. This package focuses on enabling students to make observations, develop mental models consistent with quantum principles, and apply these models to related situations.…”

Experiments with Fluorescent Lamps

“…Gratton et al 6 observed compact fluorescent lamps through a diffraction grating. Escalada et al 7 considered quantum effects in light emitting diodes and fluorescent lamps.…”

El espectroscopio cuantitativo como instrumento para la construcción y uso de modelos de emisión y absorción de radiación en física cuántica

“…Así mismo, se olvida el valor que tiene la física cuántica para explicar el funcionamiento de aplicaciones tecnológicas modernas, lo que aporta a los alumnos conocimientos que les permiten tomar decisiones informadas, contribuyendo así a la alfabetización científica, objetivo fundamental de la enseñanza científica [12][13][14].…”