Electrical Switching in Thin Films of Nandi Flame Seed Cuticles

Autor: Joshua Sangoro, Gabriel Katana, Wycliffe Kiprop Kipnusu, I.V.S. Rathore, Charles M. Migwi
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: International Journal of Polymer Science, Vol 2009 (2009)
ISSN: 1687-9430
1687-9422
Popis: Current-voltage ( 𝐼 - 𝑉 ) characteristics of Nandi flame seed cuticles (NFSCs) have been studied as a function of irradiation, annealing, and poling temperature. The cuticles showed memory and threshold switching. Threshold voltage 𝑉 t h was about 5 V which is almost five times higher than 𝑉 t h observed in synthetic polymers. The threshold voltage 𝑉 t h increased to 6–8 V after irradiation and annealing depending on the duration of annealing or irradiation. After switching, conductivity increased by an order of 1 0 2 . In reverse bias, increase of current was observed and the memory hysteresis loop was at higher conductivity than at the time of switching. Switching effect was minimized at a poling temperature of 370 K. Formation of semiquinones and quinoid radicals from phenolic compounds may have contributed to electrical switching and hysteresis effect.
Databáze: OpenAIRE
Externí odkaz: