期刊
APPLIED PHYSICS LETTERS
卷 94, 期 10, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3098472
关键词
aluminium; calcium; dissociation; excitons; fullerenes; multilayers; optimisation; organic semiconductors; photoconductivity; reflectivity; silver; solar cells
资金
- French Agence Nationale pour la Recherche (ANR)
- solar photovoltaic program NANORGYSOL
- EPSRC [EP/E01075X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E01075X/1] Funding Source: researchfish
Effects of different cathode metals, such as aluminum, calcium, and silver, and difference in their reflectivity on the photocurrent generation in pentacene-C-60 heterojunction solar cell are presented. Using optical transfer matrix calculations, we find that metal reflectivity has a profound impact on the electrical field confinement within the multilayer device structures. Silver as cathode offers better optical-field confinement close to the pentacene-C-60 interface over generally preferred aluminum cathode. External quantum efficiency measurements confirm higher exciton dissociation efficiency and high photocurrent generation ability of silver over aluminum cathode making the choice of cathode metal an important parameter in device optimization.
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