可作為「鈣鈦礦太陽能電池」電洞傳輸材料之免摻雜醌共軛小分子;Dopant-Free Quinoid-Based Hole Transporting Materials for Perovskite Solar Cells

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题名:	可作為「鈣鈦礦太陽能電池」電洞傳輸材料之免摻雜醌共軛小分子;Dopant-Free Quinoid-Based Hole Transporting Materials for Perovskite Solar Cells
作者:	陳俊安;Chen, Chun-An
贡献者:	化學學系
关键词:	鈣鈦礦太陽能電池;電洞傳輸材料
日期:	2017-07-26
上传时间:	2017-10-27 12:57:47 (UTC+8)
出版者:	國立中央大學
摘要:	利用不同含雙醛基π共軛剛硬片段，如苯、9,10取代蒽、2,6取代蒽、噻吩與引入不同長度碳鏈之雙苯酮化合物反應，可合成出雙咪唑化合物，隨後以普魯士藍試劑氧化，得到系列對稱醌化合物，一些化合物並經單經結構解析鑑定。這些化合物具有優異之熱穩定性，且在近紅外光區有很強的吸收。由於化合物有不錯之電洞傳輸性質，可做為鈣鈦礦太陽能電池之電洞傳輸材料。醌化合物因中心剛硬平面結構，使分子間易發生π–π作用力產生堆疊， DIQ-C12化合物即因分子間π–π型堆疊架構，形成有利於電洞傳輸之通道。在不摻雜情況下以DIQ-C12為電洞傳輸材料元件光電轉換效率達到11.60%，相當接近經摻雜LiTFSI之標準品spiro-OMeTAD元件光電轉換效率11.88%，由於未添加親水性之LiTFSI，使得元件較spiro-OMeTAD標準元件的穩定性為佳。 ;We try to use many kids of dialdehyde Various rigid π-linker (benzene, 9,10-anthracene, 2,6-anthracene, thiophene) functionalized with dialdehyde reacted with alkoxy substituted diaryl dione to form bis-imidazole derivatives, which were then oxidized by potassium ferricyanide to provide symmetric quinone compounds, some of them were also characterized by single crystal structural determination. These compound exhibit good thermal stability and have intense absorption in the near-infrared region. Due to good hole transport ability, the compounds were used as the hole transport materials for perovskite solar cells. The rigid segment in the quinone compounds is beneficial to intermolecular π–π interaction and leads to aggregation of the molecules. The compound DIQ-C12 is an example with such π–π interaction framework, which forms hole transport channel. The perovskite solar cells using dopant- or additive-free DIQ-C12 as achieves a conversion of 11.66%, which is comparable with the standard cell using spiro-OMeTAD with LiTFSI as the additive (11.80). The cell of DIQ-C12 has better temporal stability because of the absence of hydrophilic LiTFSI.
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