LEDs & Photodiodes
LED Technologies & Properties
- LED is a two-lead semiconductor light source. LEDs are small and are commonly used as indicator lamps in electronic devices
- Due to the increased design flexibility, efficient use of power and environmental benefits the use of LEDs as lighting, data communication and signalling devices is growing in many applications such as space, aviation and automotive lighting, advertising and traffic signals
- The use of new semiconductor compounds based on GaN, GaP, InP and GaAs allows to cover a wider light-emitting range
Key performance parameters
- Radiant flux
- Spectral response
- Forward voltage
- Emission angle
- Reverse current
PHOTODIODE TECHNOLOGIES & PROPERTIES
- A photodiode is a two-lead semiconductor light detector that converts light into electric current (i.e. photocurrent). The generated photocurrent can be quite precisely proportional to the incident light
- The semiconductor material used to make a photodiode is critical to defining its properties, it should have a strong absorption for the optical wavelength of interest
- Semiconductor compounds based on Si, Ge, InP, GaN and InGaAs materials allow to have good detection sensitivity in wide spectral range
Critical performance parameters
- Spectral responsivity
- Dark current
- Response time
- NEP
- Bandwidth
Integrating sphere setup
Innovation, Optoelectronics and New Technologies Technical Manager at Alter Technology Tüv Nord
Bachelor degree as Telecommunication Engineer at University of Las Palmas de GC. In September 2003, She obtained a M. Sc. in Opto-Electronics and Optical Information Processing from Queen’s University of Belfast. In September 2007, she obtained her Ph.D in the Nano-structured Media Research Division at IRCEP at Queen’s University of Belfast. Laura Peñate is working in ALTER TECHNOLOGY since 2008 and is directly involved in photonic parts evaluation for harsh environment applications covering a very large range of parts from basic optoelectronic devices (LEDS, photodiodes) up to more complex systems such as optical modulator, optical amplifiers, etc…for some ESA projects as SOLAR ORBITER, BEPI COLOMBO as well as specific TRP contracts.
Latest posts by Laura Peñate (see all)
- LED Technologies & Properties - 2nd February 2016
- Fast optical source for quantum key distribution based on semiconductor optical amplifiers - 1st February 2016
- Low Temperature Radiation Test of High Voltage Optocouplers for Space Applications - 1st February 2016
