氧化钒作为硅混合太阳能电池中透明的载流子选择层，可提高光伏性能,ACS Applied Energy Materials

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氧化钒作为硅混合太阳能电池中透明的载流子选择层，可提高光伏性能
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2019-05-29 00:00:00 , DOI: 10.1021/acsaem.9b00565
Chia-Yun Chen , Ta-Cheng Wei , Po-Hsuan Hsiao , Chia-Hsiang Hung

五氧化二钒（V ₂ O ₅）已被提出作为有机电子器件中的空穴的有希望的选择性触点。在这项研究中，采取了使硅基混合太阳能电池的电极表面上可能的电荷复合最小化的策略，并进一步使空穴提取具有出色的能力。这是通过基于简化的低温制造工艺插入混合的氧化钒（VO _x）相来完成的。对这种VO _x层的结晶度，化学状态和组成，形貌以及透光率进行了详细的检查，揭示了V ₂ O ₃和V ₂ O的共存性。_5个相通过建立类似欧姆的界面以及阻止电子的传输来促进空穴选择性接触，并进一步验证了在200°C时的最佳退火处理的5个相。在此基础上，采用溶液加工方法完全制备了VO _x电子阻挡层在有机/无机混合太阳能电池中的插入过程，其领先的转换效率为14.4％，约为传统VO的1.6倍。_无x混合太阳能电池。这些结果为实现高性能和低成本太阳能电池提供了可行的规则，并且可能进一步为基于混合材料设计的其他功能应用提供了巨大潜力。

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Vanadium Oxide as Transparent Carrier-Selective Layer in Silicon Hybrid Solar Cells Promoting Photovoltaic Performances

Vanadium pentoxide (V₂O₅) has been proposed as a promising selective contact for holes in organic electronic devices. In this study, the strategy was undertaken for minimizing the possible charge recombination at electrode surfaces in the silicon-based hybrid solar cells and further allowed the exceptional capability for hole extraction. This was accomplished by inserting the mixed vanadium oxide (VO_x) phases based on a simplified low-temperature fabrication process. Detailed examinations of crystallinity, chemical states and compositions, topography, and optical transmittance of such VO_x layer were performed, revealing the coexistence of V₂O₃ and V₂O₅ phases that facilitated the hole-selective contact due to establishing the ohmic-like interfaces as well as blocking the transport of electrons, and the optimal anneal treatment at 200 °C was further validated. On the basis of this, the insertion of a VO_x electron-blocking layer in the integrated organic/inorganic hybrid solar cells was fully fabricated with solution processing methods, presenting the leading conversion efficiency of 14.4% being approximately 1.6 times superior than the conventional VO_x-free hybrid solar cells. These results provided a viable rule toward realizing the high-performance and low-cost solar cells and might further offer the high potential for other functional applications based on hybrid material designs.

更新日期：2019-05-29

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