The impact of P(NDI2OD-T2) crystalline domains on the open-circuit voltage of bilayer all-polymer solar cells with an inverted configuration | Zendy

Yu Jin Kim | Zendy; Chan Eon Park | Zendy

Open Access

The impact of P(NDI2OD-T2) crystalline domains on the open-circuit voltage of bilayer all-polymer solar cells with an inverted configuration

Author(s) -

Yu Jin Kim,

Chan Eon Park

Publication year - 2015

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4937469

Subject(s) - materials science , stacking , bilayer , annealing (glass) , open circuit voltage , energy conversion efficiency , crystallite , short circuit , polymer solar cell , optoelectronics , current density , solar cell , voltage , composite material , nuclear magnetic resonance , physics , quantum mechanics , membrane , biology , metallurgy , genetics

We fabricated P(NDI2OD-T2)/PTB7 bilayer all-polymer solar cells with an inverted configuration, where the annealing temperature was systematically varied. The current density–voltage behavior was investigated and the structural properties of the P(NDI2OD-T2) layers were characterized. Absorption spectroscopy, surface morphology, and crystallite analysis showed that increasing phase segregation of P(NDI2OD-T2) films occurred as the annealing temperature increased. We found that, as the P(NDI2OD-T2) stacking improved, with larger domains, the open-circuit voltage decreased and the saturation dark current density increased. This work provides a guide for the processing of P(NDI2OD-T2) layers to maximize the power conversion efficiency of all-polymer solar cells

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