• The solution limit of manganese ion in BiFeO₃–BaTiO₃ (BF–BT) was determined by combining multiple advanced characterization methods.

• The defect engineering associated with fine doping can realize the co-modulation of polarization configuration, iron oxidation state and domain orientation.

• The BF–BT–0.2Mn piezoelectric energy harvester shows excellent power generation capacity at 250 °C, which is an important breakthrough for lead-free piezoelectric devices.

中文翻译：

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具有合理掺杂剂调制的缺陷工程在无铅压电陶瓷中高温能量收集中的应用

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  通过结合多种先进的表征方法，确定了锰离子在 BiFeO₃–BaTiO₃ （BF–BT） 中的溶液限。

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  与精细掺杂相关的缺陷工程可以实现极化构型、铁氧化态和畴取向的共调控。

• 
  BF-BT-0.2Mn 压电能量采集器在 250 °C 时表现出优异的发电能力，这是无铅压电器件的重要突破。