Publications by authors named "Tyko D Shoji"
Article Synopsis
- This study uses dual-output Mach-Zehnder modulators to compare a femtosecond pulse train with a microwave signal, effectively reducing amplitude-to-phase modulation conversion noise by over 40 dB.
- A high-sensitivity phase noise measurement technique is developed, achieving impressive results with phase noise levels of -186 dBc/Hz at frequencies above 10 kHz, corresponding to thermal noise from a +9 dBm carrier signal.
- The method effectively compares a 1-GHz femtosecond laser to a 1-GHz microwave signal from a mode-locked laser, with observed noise limitations primarily due to the characteristics of the used lasers and photodetector.
Characterizing ion profiles in dynamic junction light-emitting electrochemical cells.
ACS Appl Mater Interfaces
November 2013
Organic semiconductors have the unique ability to conduct both ionic and electronic charge carriers in thin films, an emerging advantage in applications such as light-emitting devices, transistors, and electrochromic devices, among others. Evidence suggests that the profiles of ions and electrochemical doping in the polymer film during operation significantly impact the performance and stability of the device. However, few studies have directly characterized ion profiles within LECs.
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