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Diffusion engineering of ions and charge carriers for stable efficient perovskite solar cells.

ABSTRACT: Long-term stability is crucial for the future application of perovskite solar cells, a promising low-cost photovoltaic technology that has rapidly advanced in the recent years. Here, we designed a nanostructured carbon layer to suppress the diffusion of ions/molecules within perovskite solar cells, an important degradation process in the device. Furthermore, this nanocarbon layer benefited the diffusion of electron charge carriers to enable a high-energy conversion efficiency. Finally, the efficiency on a perovskite solar cell with an aperture area of 1.02?cm2, after a thermal aging test at 85?°C for over 500?h, or light soaking for 1,000?h, was stable of over 15% during the entire test. The present diffusion engineering of ions/molecules and photo generated charges paves a way to realizing long-term stable and highly efficient perovskite solar cells.

SUBMITTER: Bi E

PROVIDER: S-EPMC5472713 | biostudies-other | 2017 Jun

REPOSITORIES: biostudies-other

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Diffusion engineering of ions and charge carriers for stable efficient perovskite solar cells.

Bi Enbing E Chen Han H Xie Fengxian F Wu Yongzhen Y Chen Wei W Su Yanjie Y Islam Ashraful A Grätzel Michael M Yang Xudong X Yang Xudong X Han Liyuan L Han Liyuan L

Nature communications 20170612

Long-term stability is crucial for the future application of perovskite solar cells, a promising low-cost photovoltaic technology that has rapidly advanced in the recent years. Here, we designed a nanostructured carbon layer to suppress the diffusion of ions/molecules within perovskite solar cells, an important degradation process in the device. Furthermore, this nanocarbon layer benefited the diffusion of electron charge carriers to enable a high-energy conversion efficiency. Finally, the effic ...[more]

PMID: 28604673

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