Fermi level engineering in (non)-degenerate semiconducting perovskite-type oxynitride photoabsorbers (A04)

（非）简并半导体钙钛矿型氮氧化物光吸收器中的费米能级工程（A04）

• 批准号: 513144825
• 金额: --
• 依托单位: Fachgebiet Werkstofftechnik und Ressourcenmanagement
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/513144825?language=en
• 关键词: Fermi; level; engineering; non; degenerate

Project A04 synthesizes perovskite-type oxynitrides AB(O,N)3 with band gaps and band edges, which are suitable for visible light absorption and solar water splitting. The anionic acceptor doping by N3– requires simultaneous activation of different charge compensation mechanisms. Hence, a series of oxynitrides actively using one charge compensation mechanism is systematically prepared and analyzed. The effect of concentration and main quantum number of reduced B-site cations on the elec-tronic band structure is analyzed to support a uniform description together with other projects. Finally, improved photocatalytic conversion based on an engineering of the Fermi level position shall be achieved.

项目A04合成了具有带隙和带边的钙钛矿型氮氧化物AB（O，N）3，适用于可见光吸收和太阳能水分解。通过N3-掺杂的阴离子受体需要同时激活不同的电荷补偿机制。因此，一系列的氮氧化物积极使用一个电荷补偿机制系统地制备和分析。分析了还原态B位阳离子的浓度和主量子数对电子能带结构的影响，与其它方案一起给出了统一的描述。最后，将实现基于费米能级位置的工程的改进的光催化转化。