التفاصيل البيبلوغرافية
| العنوان: |
Interfacial Charge Transfer Bridge Prolongs Carrier Recombination Lifetimes of CoFe Metal‐Thiolate Framework/Hematite Photoanode for Water Oxidation. |
| المؤلفون: |
Yang, Tao, Chen, Zong‐Wei, Yue, Xin‐Zheng, Liu, Qing‐Chao, Yi, Sha‐Sha, Zhu, Yong‐Fa |
| المصدر: |
Advanced Functional Materials; May2024, Vol. 34 Issue 18, p1-9, 9p |
| مصطلحات موضوعية: |
CHARGE transfer, OXIDATION of water, CHARGE carriers, P-N heterojunctions, INTERFACIAL bonding, PHOTOELECTROCHEMICAL cells, HEMATITE |
| مستخلص: |
Constructing heterostructural photoanodes is attractive for elevating the photoelectrochemical (PEC) performance, however, it is a long‐standing challenge to achieve highly efficient interfacial charge transfer. Herein, a CoFe metal‐thiolate framework (CoFe MTF)/Fe2O3 photoanode connected by an interfacial Fe─O─N/S bond is designed to modulate the behavior of charge carriers and improve water oxidation performance. It is disclosed that this interfacial bond functions as a direct charge transfer bridge between shallow trap states of Fe2O3 and CoFe MTF, leading to prolonged carrier recombination lifetimes (85 ns for CoFe MTF/Fe2O3 compared to 37 ns for Fe2O3) and enhanced charge transfer efficiency. Alternatively, a robust interfacial electric field is established in the CoFe MTF/Fe2O3 p–n heterojunction, facilitating efficient charge transfer. As expected, the CoFe MTF/Fe2O3 photoanode exhibits significant enhancement in water oxidation, resulting in a three‐fold increase in photocurrent density compared to pristine Fe2O3. This study highlights the significance of designing interfacially bonded heterostructural photoelectrodes to regulate the transfer characters of charge carriers. [ABSTRACT FROM AUTHOR] |
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