Department of Polymer Chemistry and Physics, Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P.R. China), Fax: (+86) 10-62759799.
ChemSusChem. 2014 Feb;7(2):474-82. doi: 10.1002/cssc.201301020. Epub 2013 Dec 20.
One-dimensional semiconductor TiO2 nanowires (TNWs) have received widespread attention from solar cell and related optoelectronics scientists. The controllable synthesis of ordered TNW arrays on arbitrary substrates would benefit both fundamental research and practical applications. Herein, vertically aligned TNW arrays in situ grown on carbon fiber (CF) substrates through a facile, controllable, and seed-assisted thermal process is presented. Also, hierarchical TiO2 -nanoparticle/TNW arrays were prepared that favor both the dye loading and depressed charge recombination of the CF/TNW photoanode. An impressive conversion efficiency of 2.48 % (under air mass 1.5 global illumination) and an apparent efficiency of 4.18 % (with a diffuse board) due to the 3D light harvesting of the wire solar cell were achieved. Moreover, efficient and inexpensive wire solar cells made from all-CF electrodes and completely flexible CF-based wire solar cells were demonstrated, taking into account actual application requirements. This work may provide an intriguing avenue for the pursuit of lightweight, cost-effective, and high-performance flexible/wearable solar cells.
一维半导体 TiO2 纳米线（TNW）引起了太阳能电池和相关光电子学科学家的广泛关注。在任意衬底上可控合成有序的 TNW 阵列将有利于基础研究和实际应用。在此，通过简便、可控且具有种子辅助的热过程，在碳纤维（CF）衬底上原位生长垂直排列的 TNW 阵列。此外，还制备了分级 TiO2-纳米颗粒/TNW 阵列，有利于 CF/TNW 光电阳极的染料负载和抑制电荷复合。由于线太阳能电池的 3D 光捕获，实现了令人印象深刻的 2.48%（在空气质量 1.5 全球光照下）的转换效率和明显的 4.18%（使用漫射板）的效率。此外，考虑到实际应用的要求，还展示了由全 CF 电极制成的高效且廉价的线太阳能电池以及完全灵活的基于 CF 的线太阳能电池。这项工作可能为追求轻量、经济高效和高性能的柔性/可穿戴太阳能电池提供了一个有趣的途径。
