Facility Agriculture: Energy Saving and Sterilization【Department of Chemical Engineering / Chen, Chih-Ming / Distinguished Professor】
設施農業：節能栽培與滅菌【化學工程學系/陳志銘特聘教授】
論文篇名 英文：Hybrid Titanium dioxide/Sericite light scattering layer to Enhance Light Harvesting of Dye-sensitized Solar Cells
中文：以二氧化鈦/雲母混成之光散射層增強染料敏化太陽能電池之光捕獲
期刊名稱 Electrochimica Acta
發表年份,卷數,起迄頁數 2021, 390, no.138820
作者 Chen, Li-Syuan; Sil, Manik Chandra; Lee, Yu-Hsin; Liu, Heng-Jui*; Chen, Chih-Ming(陳志銘)*
DOI 10.1016/j.electacta.2021.138820
中文摘要 增強光捕獲是提高染料敏化太陽能電池光伏性能的必要策略，典型的方法是在光電陽極使用光散射層，以增加入射光的散射與被捕獲效率。在本研究中，我們設計一種由微米級絹雲母薄片和二氧化鈦奈米顆粒組成的新型光散射層，並使用兩種尺寸的二氧化鈦奈米顆粒（20-30 nm 的 P25-二氧化鈦和 30-100 nm 的 B-二氧化鈦）進行材料優化。此種混合散射層提高了染料敏化太陽能電池在標準One Sun太陽光和低強度照明下的光電轉換效率。分別使用 P25-二氧化鈦/5 wt% 絹雲母和 B-二氧化鈦/25 wt% 絹雲母散射層，染料敏化太陽能電池的最大電池效率分別為 8.667 % 與 8.963 %，優於使用純二氧化鈦散射層(8.2%)。在 6,000 勒克斯照度下，採用相同的二氧化鈦/絹雲母混合系統亦獲得22.936 % 與 23.121 % 的最大電池效率。此種在散射層中添加絹雲母確實可增強光收集性能，並提供製備更有效光散射層的新途徑。
英文摘要 Intensification of light harvesting is an imperative strategy to improve the photovoltaic performance of dye-sensitized solar cells (DSSCs). The typical way is to employ a light scattering layer on top of the photoanode to augment the photon scattering of incident light for light harvesting of dye sensitizers. In this study, we have designed a new light scattering layer consisting of micro-sized sericite flakes and TiO2 nanoparticles, and material optimization is performed by using two sizes of TiO2 nanoparticles (P25-TiO2 of 20-30 nm and B-TiO2 of 30-100 nm) as the matrix to dope sericite flakes. This hybrid scattering layer gives rise to an enhancement of power conversion efficiency of DSSC under 1 sun and low-intensity illuminations. Maximum cell efficiencies of 8.667 % and 8.963 % are recorded for the DSSCs employing P25-TiO2/5 wt% sericite and B-TiO2/25 wt% sericite scattering layer, respectively, at 1 sun illumination, which outperforms that employing pure TiO2 scattering layer (8.2 %). Maximum cell efficiencies of 22.936 % and 23.121 % are optimized at 6,000 lux following the same TiO2/sericite hybrid systems. Such addition of sericite in the scattering layer indeed enhances the light harvesting performance and offers a new pathway to prepare more efficient light scattering layer.
發表成果與本中心研究主題相關性 摻雜雲母至光電極反應層，增加光利用率並提升太陽能電池的效能表現。