Magnetoconductance responses of triplet polaron pair charge reaction in hyperfine coupling regime

Autor:	Wei Shun Huang, Bin Hu, Tzung-Fang Guo, Jung-Chun Huang, Ten-Chin Wen, Zhe Rui Xu
Rok vydání:	2013
Předmět:	Pentacene chemistry.chemical_compound Physics and Astronomy (miscellaneous) Condensed matter physics Field (physics) Chemistry Electric field Charge (physics) Heterojunction Polaron Hyperfine structure Magnetic field
Zdroj:	Applied Physics Letters. 103:253304
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.4852755
Popis:	This study investigates a distinct low-field negative magnetoconductance (MC) response under illumination in pentacene:fullerene heterojunction devices. The low-field negative MC response is attributed to a triplet polaron pair ((PP)3) charge reaction associated with the hyperfine interaction. Applying a magnetic field can reduce the intensity of the reaction causing the negative MC response. Additionally, the low-field negative MC response changes with the blending ratios of fullerene in pentacene active layer, the applied bias voltages, and applying device structure with bulk heterojunction or planar heterojunction configuration, because the modulations of the internal electric field. Consequently, the results indicate that the (PP)3 charge reaction induces the low-field negative MC, which is correlated with the local hyperfine field, external magnetic field, and electric field.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8151b0b20fabe1e0e54f30b0ca43b296 https://doi.org/10.1063/1.4852755 Zobrazit plný text záznamu