Solid-State Lighting: A Concise Review of the State of the Art on LED and OLED Modeling

Electrical and Optical Impulse Response of High-Speed Micro-OLEDs Under UltraShort Pulse Excitation

“…In the current section authors focus mainly on the electrical response. The approach consists of a numerical study of an existing OLED electrical model modified to take into account the on-off configuration [13] [14]. The goal is to identify which parameter/element of the model affects the most the electrical impulse responses.…”

“…A modelling approach was followed to study the impact of the fabrication process and geometry of two OLEDs on their electrical and optical responses. More precisely, this study focuses on how the geometry and the fabrication process impact the OLED impulse response by straightforward analysis of a modified electrical model [13] [14] that takes into account the on-off regime, in the presence of an ultra-short pulse. This leads to identify and optimize the dominant parameters/elements that limit the time response of the OLED.…”

Proceso de diseño de sistemas de iluminación LED energéticamente autónomos

“…Un sistema LED a requiere de un análisis más detallado, ya que la temperatura en el dispositivo emisor de luz afecta su rendimiento luminoso [2], por lo que el control que le suministre potencia eléctrica debe evitar sobrecargas de corriente al LED. El acondicionador de potencia, mostrado en la figura 1 es un circuito electrónico necesario para regular la corriente que excita la emisión de luz del LED.…”

“…La relación entre la corriente que circula a través del LED y la intensidad de luz es no lineal, sin embargo, tal y como se comprueba en [2], el LED se puede modelar como una resistencia, denominada resistencia dinámica del LED, conectada en serie con una fuente de tensión en corriente directa, tal y como se indica en la figura 8.…”

A Single-Stage LED Tube Lamp Driver with Input-Current Shaping for Energy-Efficient Indoor Lighting Applications

“…As a result of the current issues in environmental protection, carbon reduction and energy savings have become a cause for great concern, and the search for energy-efficient alternatives for lighting applications has intensified at a global scale. The up-to-date development of solid-state lighting technology has gained traction because of the urgent need for efficient energy usage [1]- [5]. Light-emitting diodes (LEDs) are compact electronic devices that allow electricity to flow through them in one direction to produce a small amount of light.…”