Facility Agriculture: Application of Solar Facilities in Agriculture【Department of Chemical Engineering / Lin, Chieh-Ting / Professor】
設施農業：光能設施於農業固碳之應用【化學工程學系/林玠廷 助理教授】
論文篇名 英文：Highly reproducible self-assembled monolayer based perovskite solar cells via amphiphilic polyelectrolyte
中文：透過兩親性聚電解質實現高度可重複的自組裝單層鈣鈦礦太陽能電池
期刊名稱 Journal of Materials Chemistry A
發表年份,卷數,起迄頁數 2024, 12(5), 2856-2866
作者 Liu, Shi-Chun; Lin, Heng-Yi; Hsu, Shih-En; Wu, Dong-Tai; Sathasivam, Sanjayan; Daboczi, Matyas; Hsieh, Hsing-Jung; Zeng, Chin-Sian; Hsu, Ting-Ge; Eslava, Salvador; Macdonald, Thomas J.; Lin, Chieh-Ting(林玠廷)*
DOI 10.1039/d3ta04512a
中文摘要 自組裝單分子層（SAM）在鈣鈦礦太陽能電池（PSCs）中，在單結和串聯器件中的高效率而備受關注。由於表面覆蓋不良及埋藏界面上鈣鈦礦層中的空隙，導致可重現性較差，限制了其廣泛應用。在此我們提出了一種簡單的方法，通過在 SAM 與鈣鈦礦層之間引入兩親性共軛聚電解質，顯著提高 PSCs 的可重現性。應用該聚電解質可使鈣鈦礦的費米能級提高 200 meV，從而在 SAM/鈣鈦礦界面產生理想的顯著能帶彎曲。此外通過一項新技術成像鈣鈦礦的埋藏界面，顯示聚電解質可最大限度減少界面空隙，實現對 ITO/SAM 表面的完全覆蓋。最終實現了超過 0.84 的優異填充因子以及超過 22.5%的光電轉換效率。這些 PSCs 展現了出色的可重現性與高性能，50 個器件的平均填充因子為 0.81，標準偏差小於 0.01。這些結果展示了一種提升包含常用 SAM 的 PSCs 可重現性的通用方法，並為兩親性共軛聚電解質在光電子器件中的廣泛應用打開了大門。
英文摘要 Self-assembled monolayers (SAM) have attracted a lot of attention in perovskite solar cells (PSCs) due to their high efficiency in both single junction and tandem devices. However, inferior reproducibility originating from poor surface coverage and voids in the perovskite layer at the buried interface still limits their widespread use. Herein, we report a facile method to significantly improve the reproducibility of PSCs by employing an amphiphilic conjugated polyelectrolyte between SAMs and perovskite layers. Application of the polyelectrolyte leads to a 200 meV shallower perovskite Fermi level, allowing a desirable, significantly increased band bending at the SAM/perovskite interface. Moreover, imaging the buried perovskite interface by a novel technique reveals that interfacial voids are minimised by the polyelectrolyte leading to complete coverage of the ITO/SAM surface. As a result, remarkable fill factors over 0.84 and power conversion efficiencies exceeding 22.5% are achieved. The PSCs demonstrate exceptional reproducibility and high performance, as evidenced by an average fill factor of 0.81 with a remarkably low standard deviation of less than 0.01 across 50 individual devices. These results demonstrate a universal method to improve the reproducibility of PSCs containing commonly used SAMs and open the door for wider use of amphiphilic conjugated polyelectrolytes in optoelectronic devices.
發表成果與本中心研究主題相關性 本研究針對鈣鈦礦太陽能電池（PSCs）的可重現性改進，與本中心的科技農業研究主題密切相關。通過引入兩親性共軛聚電解質，顯著提升了鈣鈦礦電池的效率和穩定性，這對於農業中的綠色能源供應具有直接應用潛力。在現代農業中，能源自主化和減少碳足跡是關鍵目標，高效、穩定的太陽能電池系統可以為農場提供持續的電力支持，用於精準農業技術、灌溉系統、自動化農業設備等應用。更具穩定性和高效的 PSCs，有望在農業設施中大規模應用，特別是在偏遠農業地區和智能溫室中。本研究成果不僅突破了鈣鈦礦太陽能電池在穩定性上的瓶頸，還為科技農業領域提供了一個潛在的清潔能源解決方案，促進了農業領域的可持續發展。