What question did this study set out to answer?

Synthesize theoretical and experimental advances in understanding ion migration mechanisms in organometal trihalide perovskite solar cells and evaluate their impact on efficiency and operational stability.

January 28, 2016Accounts of Chemical Research

Ion Migration in Organometal Trihalide Perovskite and Its Impact on Photovoltaic Efficiency and Stability

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Synthesize theoretical and experimental advances in understanding ion migration mechanisms in organometal trihalide perovskite solar cells and evaluate their impact on efficiency and operational stability.
Critically synthesized theoretical models and experimental evidence concerning mobile ionic species and migration pathways in organometal trihalide perovskites.
Assessed device-level phenomena linked to ionic drift, including electrical-field driven phase transformations and performance degradation under illumination and dark conditions.
Identified intrinsic ion migration as a primary driver of photocurrent hysteresis, giant dielectric response, switchable photovoltaic effects, and reversible phase separation.
Determined that internal ion movement occurs intrinsically within the crystal lattice, meaning device encapsulation alone cannot prevent stability losses.
Identified emerging material engineering and defect-passivation strategies designed to eliminate or suppress ionic drift to extend solar cell operational lifetimes.

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Implication

Critical review uncovers mechanisms of intrinsic ion migration in organometal trihalide perovskites, highlighting its direct link to device degradation and photocurrent hysteresis.

Cite This Study

Yuan et al. (2016) studied this question.

synapsesocial.com/papers/69d7f9133eff0c9dfaae2e5d https://doi.org/10.1021/acs.accounts.5b00420

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Implication

Critical review uncovers mechanisms of intrinsic ion migration in organometal trihalide perovskites, highlighting its direct link to device degradation and photocurrent hysteresis.

Ion Migration in Organometal Trihalide Perovskite and Its Impact on Photovoltaic Efficiency and Stability

Key Points

Discussion

Implication

Cite This Study

Ion Migration in Organometal Trihalide Perovskite and Its Impact on Photovoltaic Efficiency and Stability

Key Points

Discussion

Implication

Cite This Study

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