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SOLAR ENERGY · 2017 · IF 4.018

Tailoring morphology and thickness of perovskite layer for flexible perovskite solar cells on plastics: The role of CH3NH3I concentration

Di Liu,Yuelong Li,Biao Shi,Xin Yao,Lin Fan,Shanzhen Zhao,Junhui Liang,Yi Ding,Changchun Wei,Dekun Zhang,Ying Zhao,Xiaodan Zhang

A smooth perovskite film fully covering the substrate is of importance for flexible perovskite solar cells (PSCs). In this study, efficient flexible PSCs are fabricated onto conductive plastic substrate by a two-step coating method under ambient condition. By adjusting the concentration of precursor CH 3 NH 3 I (MAI), the morphology and thickness of perovskite layer is effectively tailored, according to SEM and AFM analysis, which consequently gives rise to a thin perovskite layer with smooth surface and smaller grain size. As a result, flexible PSCs with efficiency of 12.7% are prepared under ambient condition, and the excellent mechanical stability of flexible PSCs is also demonstrated with bending test under severe conditions.

CAS / MDL: 90076-65-6 616-45-5

研究领域: 材料科学 · 能源技术

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JOURNAL OF POWER SOURCES · 2015 · IF 6.217

Efficient highly flexible dye sensitized solar cells of three dimensional graphene decorated titanium dioxide nanoparticles on plastic substrate

Jian Zhi,Houlei Cui,Angran Chen,Yian Xie,Fuqiang Huang

Dye-sensitized solar cells (DSSCs) on flexible plastic substrates usually suffer from a slower electron diffusion rate and insufficient surface area due to no sintering process . Therefore, the conversion efficiency (ƞ) of such flexible DSSCs is normally below 6%. Here, the highly flexible DSSCs with enhanced performance are fabricated at room temperature, employing 3D graphene decorated nanocrystalline TiO 2 films (3DGT) as anode on plastic substrates. Owing to the enhanced charge transportation and increased surface area from 3D conductive graphene skeleton, the 13 μm-thick 3DGT-0.85 (0.85 wt% 3D graphene plus TiO 2 nanoparticles) anode achieves a power conversion efficiency of 6.41%, which is 56% higher than pristine TiO 2 based anode. This efficiency is among the highest values for the previously reported TiO 2 photoanodes on plastic substrates.

研究领域: 材料科学 · 纳米科技 · 能源化学 · 光电转换 · 柔性电子学

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Tailoring morphology and thickness of perovskite layer for flexible perovskite solar cells on plastics: The role of CH3NH3I concentration

Efficient highly flexible dye sensitized solar cells of three dimensional graphene decorated titanium dioxide nanoparticles on plastic substrate