TY - GEN
T1 - Temperature dependence of thermophotonic energy transfer in intracavity structures
AU - Casado, Alberto
AU - Radevici, Ivan
AU - Sadi, Toufik
AU - Oksanen, Jani
N1 - | openaire: EC/H2020/638173/EU//iTPX
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Electroluminescent cooling (ELC) of light-emitting diodes (LEDs) at high powers is yet to be demonstrated. Earlier studies of photoluminescent cooling (PLC) suggested that temperature strongly affects the light emission efficiency and therefore it is useful to explore the temperature range below room temperature (RT) where ELC might be easier to observe. With that purpose in mind, we electrically characterised three different sized (0.2, 0.5 and 1 mm diameter) double-diode structure (DDS) devices, consisting of a coupled LED and photodiode (PD), at temperatures ranging from 100 K to 325 K to investigate how the temperature affects the efficiency of the structures in practice. We found that, for the studied devices, the coupling quantum efficiency (CQE) as well as the overall efficiency indeed increase when temperature decreases and reach their highest values at temperatures below room temperature.
AB - Electroluminescent cooling (ELC) of light-emitting diodes (LEDs) at high powers is yet to be demonstrated. Earlier studies of photoluminescent cooling (PLC) suggested that temperature strongly affects the light emission efficiency and therefore it is useful to explore the temperature range below room temperature (RT) where ELC might be easier to observe. With that purpose in mind, we electrically characterised three different sized (0.2, 0.5 and 1 mm diameter) double-diode structure (DDS) devices, consisting of a coupled LED and photodiode (PD), at temperatures ranging from 100 K to 325 K to investigate how the temperature affects the efficiency of the structures in practice. We found that, for the studied devices, the coupling quantum efficiency (CQE) as well as the overall efficiency indeed increase when temperature decreases and reach their highest values at temperatures below room temperature.
KW - Electroluminescent cooling
KW - Heat engines
KW - III-V semiconductors
KW - Light-emitting diodes
KW - Temperature dependence
KW - Thermophotonic Cooling
UR - http://www.scopus.com/inward/record.url?scp=85065606063&partnerID=8YFLogxK
U2 - 10.1117/12.2506227
DO - 10.1117/12.2506227
M3 - Conference contribution
AN - SCOPUS:85065606063
T3 - Proceedings of SPIE
SP - 1
EP - 7
BT - Photonic Heat Engines
A2 - Seletskiy, Denis V.
A2 - Epstein, Richard I.
A2 - Sheik-Bahae, Mansoor
T2 - Photonic Heat Engines: Science and Applications
Y2 - 3 February 2019 through 4 February 2019
ER -