Status of Solid State Lighting Product Development and Future Trends for General Illumination
Thomas M Katona1, P Morgan Pattison2, Steve Paolini3
1Department of Biomedical and General Engineering, California Polytechnic State University, San Luis Obispo, California 93407;
Annual Review of Chemical and Biomolecular Engineering
|March 30, 2016
Summary
Light-emitting diodes (LEDs) offer unparalleled energy efficiency, revolutionizing lighting. Current research focuses on integrating these solid-state lighting systems into diverse applications beyond illumination, such as communications and healthcare.
Area of Science:
- Solid-state lighting
- Optoelectronics
- Materials science
Background:
- Light-emitting diodes (LEDs) have achieved remarkable energy efficiency across the visible spectrum.
- LEDs are now the predominant light source for new lighting products.
- Significant challenges and opportunities exist in developing and integrating LED core light sources into complete lighting systems.
Purpose of the Study:
- To review current solid-state lighting systems and their development status.
- To provide context for emerging trends in LED technology.
- To explore value-added lighting solutions extending beyond light generation.
Main Methods:
- Literature review of LED fabrication and system integration.
- Analysis of current development status in solid-state lighting.
- Contextualization of trends driving value-added lighting applications.
Main Results:
- LED lighting technology has reached peak energy efficiency.
- Integration of core light sources into systems presents ongoing challenges and opportunities.
- Solid-state lighting is evolving towards applications in communications, healthcare, and agriculture.
Conclusions:
- LEDs represent a mature technology in terms of energy efficiency.
- Future developments focus on system integration and novel applications.
- Solid-state lighting is expanding its role into diverse scientific and industrial fields.
More Related Videos
Related Concept Videos
Photoluminescence: Applications
1.2K
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
1.2K
Photoluminescence: Fluorescence and Phosphorescence
4.5K
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
A pair of electrons in a...
4.5K
Electrical Energy
1.9K
Using electric appliances for a longer period of time consumes more electrical energy and results in a higher electric bill. The energy produced by the transfer of electrons from one point to another is known as electrical energy. If power is delivered at a constant rate, the electrical energy can be defined as the product of power used by the device for a period of time. The energy unit on electric bills is the kilowatt-hour, where one kilowatt-hour is equivalent to 3.6 × 106 joules.
1.9K
Variables Affecting Phosphorescence and Fluorescence
1.9K
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
1.9K
Fluorescence and Phosphorescence: Instrumentation
1.8K
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
1.8K
P-N junction
1.6K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
1.6K


