| 標題：Enhancing Water-Splitting Efficiency Using a Zn/Sn-Doped PN Photoelectrode of Pseudocubic α–Fe2O3 Nanoparticles |
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| 學年 | 108 |
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| 學期 | 2 |
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| 出版（發表）日期 | 2020/06/15 |
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| 作品名稱 | Enhancing Water-Splitting Efficiency Using a Zn/Sn-Doped PN Photoelectrode of Pseudocubic α–Fe2O3 Nanoparticles |
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| 作品名稱（其他語言） | |
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| 著者 | Yang JX; Meng Y; Tseng CM; Huang YK; Lin TM; Wang YM; Deng JP; Wu HC; Hung WH |
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| 單位 | |
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| 出版者 | |
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| 著錄名稱、卷期、頁數 | Nanoscale Research Letters 15, 130 |
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| 摘要 | α-Phase hematite photoelectrodes can split water. This material is nontoxic, inexpensive, and chemically stable; its low energy gap of 2.3 eV absorbs light with wavelengths lower than 550 nm, accounting for approximately 30% of solar energy. Previously, we reported polyhedral pseudocubic α-Fe2O3 nanocrystals using a facile hydrothermal route to increase spatial charge separation, enhancing the photocurrent of photocatalytic activity in the water-splitting process. Here, we propose a p-n junction structure in the photoanode of pseudocubic α-Fe2O3 to improve short carrier diffusion length, which limits its photocatalytic efficiency. We dope Zn on top of an Fe2O3 photoanode to form a layer of p-type semiconductor material; Sn is doped from the FTO substrate to form a layer of n-type semiconductor material. The p-n junction, n-type Fe2O3:Sn and p-type Fe2O3:Zn, increase light absorption and charge separation caused by the internal electric field in the p-n junction. |
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| 關鍵字 | Pseudocubic α-Fe2O3;Water splitting;p-n junction;Solar energy |
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| 語言 | 英文 |
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| ISSN | 1556-276X |
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| 期刊性質 | 國外 |
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| 收錄於 | SCI; |
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| 產學合作 | |
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| 通訊作者 | |
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| 審稿制度 | 是 |
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| 國別 | 德國 |
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| 公開徵稿 | |
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| 出版型式 | ,電子版,紙本 |
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| 相關連結 | |
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| SDGs | |
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