教師資料查詢 | 類別: 期刊論文 | 教師: 鄧金培 DENG,JIN-PEI (瀏覽個人網頁)

標題:Enhancing Water-Splitting Efficiency Using a Zn/Sn-Doped PN Photoelectrode of Pseudocubic α–Fe2O3 Nanoparticles
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出版(發表)日期2020/06/15
作品名稱Enhancing Water-Splitting Efficiency Using a Zn/Sn-Doped PN Photoelectrode of Pseudocubic α–Fe2O3 Nanoparticles
作品名稱(其他語言)
著者Yang JX; Meng Y; Tseng CM; Huang YK; Lin TM; Wang YM; Deng JP; Wu HC; Hung WH
單位
出版者
著錄名稱、卷期、頁數Nanoscale Research Letters 15, 130
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.
關鍵字Pseudocubic α-Fe2O3;Water splitting;p-n junction;Solar energy
語言英文
ISSN1556-276X
期刊性質國外
收錄於SCI;
產學合作
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審稿制度
國別德國
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