反溶劑純化碘化鉛用于鈣鈦礦太陽能電池的研究
首發時間:2018-10-19
摘要:通過反溶劑純化方法成功提純低純度碘化鉛(PbI2),PbI2在溶于二甲基亞砜(DMSO)中后,吸取上清液并向其中加入反溶劑-無水乙醇進行萃取,將萃取得到淡黃色沉淀(DMSO-PbI2)退火得到純化后PbI2,結果表明,在最優條件下PbI2的收得率可達81.35%。 對純化前后的PbI2進行X射線衍射(XRD)、掃描電子顯微鏡(SEM)和熱重(TG/DSC)表征來分析其微觀形貌和熱穩定性變化。結果表明PbI2的主要雜質羥基碘化鉛(Pb(OH)I)被成功去除,其熱穩定性得到提高。另外,純化后PbI2可完全溶于DMSO中,其晶體延[001]和[110]方向生長,長度為1-10 um。將純化后PbI2和光譜級PbI2用于制備鈣鈦礦太陽能電池,其光電轉化效率可分別達到14.71%和14.90%。
關鍵詞: 反溶劑純化 PbI2 Pb(OH)I 鈣鈦礦太陽能電池
For information in English, please click here
Study on the anti-solvent purification method of lead iodide for perovskite solar cells
Abstract:The low-puritylead iodide (PbI2) was purified by the anti-solvent purification method, successfully. After PbI2 was dissolved in dimethyl sulfoxide (DMSO), the supernatant was aspirated and the antisolvent-anhydrous ethanol was added thereto for extraction, the obtained pale yellow precipitate (DMSO-PbI2) was annealedto obtain as-purified PbI2.The result showed that the yield of PbI2 reach 81.35% under the optimal conditions. The PbI2 was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetry (TG/DSC) to analyze the changes of microstructure and thermal stability. The results indicated that the lead hydroxyl iodide (Pb(OH)I) was successfully removed, which is the main impurity of PbI2. The PbI2\' thermal stability was improved. In addition, the as-purified PbI2 can be soluble in DMSO, completely, and its\' crystal growth was extended in the [001] and [110] direction with a length of 1-10 μm.The as-purified PbI2 and specturePbI2 were used to prepare perovskite solar cells, and its the photoelectric conversion efficiency can reach 14.71% and 14.90%, respectively.
Keywords: Antisolvent purification PbI2 Pb(OH)I Perovskite solar cells
引用
No.****
動態公開評議
共計0人參與
勘誤表
反溶劑純化碘化鉛用于鈣鈦礦太陽能電池的研究
評論
全部評論