TY - JOUR
T1 - Optical rectification through an Al 2 O 3 based MIM passive rectenna at 28.3 THz
AU - Jayaswal, Gaurav
AU - Belkadi, A.
AU - Meredov, Azat
AU - Pelz, B.
AU - Moddel, G.
AU - Shamim, Atif
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OCRF-2014-CRG-62140381
Acknowledgements: We acknowledge financial support from King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) for CRG grant OCRF-2014-CRG-62140381. Authors would also like to thank Shuai Yuan and Shuai Yang for their help with optical set-up and SEM analysis.
PY - 2017/11/21
Y1 - 2017/11/21
N2 - Harevesting energy from waste heat which fluctuates between, approximately, 250 K and 1500 K, i.e., peaking at 2–11 μm, could be a game changer in terms of tapping on to renewable energy sources. However, research in this area has remained elusive due to numerous challenges. We consider waste heat to be an electromagnetic (EM) wave in the mid infrared (IR) frequency range, which can be captured through a resonant antenna and rectified into useful DC through a diode, an arrangement typically known as a rectenna. A bowtie antenna has been optimized for IR field capture and enhancement through EM simulations. At the overlap of the bowtie arms, a metal-insulator-metal (MIM) diode has been realized that can operate at such a high frequency (28.3 THz or 10.6 μm). The choice of a low permittivity insulator (Al2O3) helps metigate the RC time constant and the diode's cutoff frequency, whereas the two different work function metals, Au and Ti, facilitate diode operation through tunneling at no applied bias. A custom optical characterization setup employing a 10.6 μm CO2 laser has been used to assess the IR capture and rectification ability of the rectenna device. A polarization dependent voltage output which is well above the noise level and well matched with our calculations, confirms the successful rectenna operation. According to authors' best knowledge, this is the first demonstration of rectification at 28.3 THz through a MIM diode based rectenna at zero applied bias.
AB - Harevesting energy from waste heat which fluctuates between, approximately, 250 K and 1500 K, i.e., peaking at 2–11 μm, could be a game changer in terms of tapping on to renewable energy sources. However, research in this area has remained elusive due to numerous challenges. We consider waste heat to be an electromagnetic (EM) wave in the mid infrared (IR) frequency range, which can be captured through a resonant antenna and rectified into useful DC through a diode, an arrangement typically known as a rectenna. A bowtie antenna has been optimized for IR field capture and enhancement through EM simulations. At the overlap of the bowtie arms, a metal-insulator-metal (MIM) diode has been realized that can operate at such a high frequency (28.3 THz or 10.6 μm). The choice of a low permittivity insulator (Al2O3) helps metigate the RC time constant and the diode's cutoff frequency, whereas the two different work function metals, Au and Ti, facilitate diode operation through tunneling at no applied bias. A custom optical characterization setup employing a 10.6 μm CO2 laser has been used to assess the IR capture and rectification ability of the rectenna device. A polarization dependent voltage output which is well above the noise level and well matched with our calculations, confirms the successful rectenna operation. According to authors' best knowledge, this is the first demonstration of rectification at 28.3 THz through a MIM diode based rectenna at zero applied bias.
UR - http://hdl.handle.net/10754/626616
UR - http://www.sciencedirect.com/science/article/pii/S2468606917301739
UR - http://www.scopus.com/inward/record.url?scp=85034653510&partnerID=8YFLogxK
U2 - 10.1016/j.mtener.2017.11.002
DO - 10.1016/j.mtener.2017.11.002
M3 - Article
AN - SCOPUS:85034653510
VL - 7
SP - 1
EP - 9
JO - Materials Today Energy
JF - Materials Today Energy
SN - 2468-6069
ER -
