کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
59473 | 1419428 | 2015 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Solvent engineering of spin-coating solutions for planar-structured high-efficiency perovskite solar cells Solvent engineering of spin-coating solutions for planar-structured high-efficiency perovskite solar cells](/preview/png/59473.png)
Control of the morphology and coverage of high-quality perovskite films is the main issue affecting planar-structured perovskite solar cells fabricated by solution processing. In this work, the solvent engineering of mixed solutions for spin-coating uniform perovskite thin films was investigated in detail by adding different ratios of N,N-dimethylformamide (DMF) or γ-butyrolactone (GBL) to dimethyl sulfoxide (DMSO). The morphology and film thickness of the resulting perovskite films were found to be significantly altered. At 20%~40% (volume fraction) of N,N-dimethylformamide mixed with DMSO, micrometer scale grains and reduced grain boundaries were observed on the highly uniform perovskite thin films. The optimized planar-structured perovskite solar cells showed power conversion efficiency as high as 16.5% and a stabilized efficiency of 14.4% at a fixed forward bias of 0.88 V.
Graphical AbstractA systematic mixed solvent engineering study has been performed to produce uniform CH3NH3PbI3 film by a spin-coating approach, resulting in planar-structured perovskite solar cells with high power conversion efficiency.Figure optionsDownload as PowerPoint slide
Journal: Chinese Journal of Catalysis - Volume 36, Issue 8, August 2015, Pages 1183–1190