透過您的圖書館登入
IP:18.222.120.131
  • 學位論文

降低碘缺乏及提升內部傳導率來提升錫基鈣鈦礦太陽能電池之效率

Enhancing the efficiency of tin perovskite solar cell by reducing iodide deficiency and increasing interior mobility

指導教授 : 徐丞志
共同指導教授 : 周必泰(Pi-Tai Chou)
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


錫基鈣鈦礦太陽能電池是作為替代含有毒性的鉛鈣鈦礦的最有希望的候選者,但是由於錫鈣鈦礦快速結晶且易於氧化為Sn4+,因此沒有表現出與鉛對應物相同的出色性能。錫鈣鈦礦的快速結晶導致表面形貌不佳和大量缺陷,例如本體中的碘化物/錫空位。在這篇研究內,我們檢查了幾個官能基團,發現添加劑中的 N-H 鍵在鈍化碘化物使其不易形成空位缺陷方面起著關鍵作用,如 XPS 數據所示。 此外,由於Carbazole添加劑提高了鈣鈦礦中的電洞遷移率降低了內部電子與電洞結合,使轉換效率從 7.32% 提高到 8.68%。

並列摘要


Tin perovskite solar cells as the most promising candidate for replacing the toxic lead one have not shown an outstanding performance as same as lead counterparts due to the fast crystallization and ease of oxidation of Sn2+ to Sn4+ . The fast crystallization of tin perovskite which contributes to poor surface morphology and lots of defects such as iodide /tin vacancy in the bulk. Herein, we examine several functional groups and find the N-H bond in the additives play a key role in passivating the iodide which make it difficult to form iodide vacancy as showed from the XPS data. Furthermore, the enhanced hole mobility in the perovskite benefited from the carbazole additive results in a power conversion efficiency improvement from 7.32% to 8.68%.

參考文獻


1. https://en.wikipedia.org/wiki/P%E2%80%93n_junction
2. https://www.pveducation.org/pvcdrom/solar-cell-operation/iv-curve
3. Kojima, A.; Teshima, K.; Shirai, Y.; Miyasaka, T., Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells. Journal of the American Chemical Society 2009, 131 (17), 6050-6051.
4. National Renewable energy Laboratory (NREL), Best Reaserach-Cell Efficiency Chart. https://www.nrel.gov/pv/cell-efficiency.html
5. J.of Photonics for Energy, 9(4), 040901 (2019). https://doi.org/10.1117/1.JPE.9.040901

延伸閱讀