Far infrared light emitting diode (FIR LED) is a type of semiconductor device that emits far infrared light. It has been widely used in various fields such as medical treatment, environmental protection, and industrial automation. In this article, we will introduce the industry of FIR LED, including its working principle, applications, market trends, and future development prospects.

Working Principle of FIR LED

The working principle of FIR LED is based on the photoelectric effect of semiconductor materials. When the forward bias voltage is applied to the semiconductor material, electrons and holes are generated in the P-N junction. Due to the energy difference between the valence band and the conduction band, electrons will be excited to the conduction band. When electrons return to the valence band, they will release energy in the form of far infrared light. FIR LED has a wide wavelength range, typically between 7.5μm and 15μm. It can emit light with a peak wavelength of 9.4μm, which is close to the water absorption peak of human skin. This makes FIR LED have a good therapeutic effect on human skin.

Applications of FIR LED

1. Medical Treatment FIR LED has been widely used in medical treatment due to its therapeutic effects on human skin. It can promote blood circulation, improve metabolism, and relieve muscle fatigue. FIR LED therapy is commonly used for the treatment of rheumatoid arthritis, neuritis, and other diseases. 2. Environmental Protection FIR LED can be used for environmental protection purposes, such as air purification and water treatment. The far infrared light emitted by FIR LED can break down harmful substances in the air and water, thereby improving the quality of the environment. 3. Industrial Automation FIR LED is also used in industrial automation. It can be used for temperature measurement, material detection, and other applications. FIR LED-based sensors have high sensitivity and stability, making them suitable for various industrial applications. 4. Consumer Electronics FIR LED is used in consumer electronics, such as smart phones, cameras, and other electronic products. It can be used for infrared remote control, infrared communication, and other functions.

Market Trends of FIR LED

The FIR LED market has been growing rapidly in recent years, driven by the increasing demand for its applications in various fields. According to a report by MarketsandMarkets, the global FIR LED market is expected to reach USD 2.3 billion by 2025, with a CAGR of 8.2% from 2020 to 2025. The main driving factors for the FIR LED market include: 1. Growing demand for FIR LED in medical treatment and environmental protection 2. Increasing application of FIR LED in industrial automation 3. Rising demand for consumer electronics with FIR LED functions

Future Development Prospects of FIR LED

The future development prospects of FIR LED are promising. With the continuous advancement of semiconductor technology, the performance of FIR LED will be further improved. The following aspects are expected to be the future development trends of FIR LED: 1. Higher brightness and energy efficiency 2. Widening application fields 3. Integration with other technologies, such as IoT and 5G In conclusion, FIR LED is a promising semiconductor device with wide applications. With the continuous development of technology and the increasing demand for its applications, the FIR LED industry is expected to maintain a rapid growth momentum in the future.