This book aims to guide graduate students how to investigate and understand optoelectronic devices via exploring the light-material interactions with graphical concepts and simplified formulas. This book can be a textbook in graduate courses and a reference book in undergraduate courses. The contents in Chapters 1, 2, 3, 4, and 5 are related to electromagnetic waves, laser beams, and waveguides. The contents in Chapters 6, 7, and 8 are related to excitons and carriers in semiconductors. The contents in Chapters 9 and 10 are focused on solar cells and light-emitting diodes, respectively.

Key Features:

• Provides the fundamental knowledge of light-matter interactions in hot fields such as solar cells, light-emitting diodes, and nano-plasmonic devices.

• Guides the readers on how to design optical spectrometers.

• Explains widely used optical technologies.

• Connects material properties and device performance.