Abstract
Photogalvanic current and voltage photoinduced by CW laser illumination of Fe-doped LN reveals quasi-periodic pulsing due to microplasmas discharges. This transformation of constant external influence into periodic response is interesting as example of self-excited systems, resembling pulsations of biological systems. Microplasmas discharges are also interesting for applications in various fields, such as surface treatment, sterilization, water splitting. We analyze self-pulsing of photogalvanic current visualized by dynamic electrowetting in a simple LC-cell, formed by a nematic LC droplet placed on Fe-doped LN crystal. In modeling contributions from both photogalvanic (bulk photovoltaic) and pyroelectric (charging by heating-cooling) effect are included. The analysis of dynamic regime reveals that a current pulse (in microsecond range) has asymmetric shape with extremely sharp rise with longer decay time. Reflected interference patterned was modulated by the dynamic electro-wetting effect. For high light intensity power conversion efficiency is enhanced due to nonlinear photogalvanic effect and microplasmas discharges.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
