Mixed-solvent-vapor annealing of perovskite for photovoltaic device efficiency enhancement

Sun, Xu; Zhang, Chunfu; Yang, Haifeng; Xi, He; Lü, Gang; Chen, Dazheng; Lü, Xiaoli; Hao, Yue

doi:10.1016/j.nanoen.2016.08.055

Cited by 121 publications

(90 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Around 40 μl of IPA solvent was dripped around the substrates during the thermal annealing process so that the solvent vapor could make contact. This solvent annealing process can improve the film crystalline quality, and the mechanism was discussed in our previous work [37]. Then, the 20 mg/ml chlorobenzene (99.8%, Sigma) solution of PCBM (98%, Nano-C) was spin-coated at 2000 rpm for 40 seconds.…”

Section: Methodsmentioning

confidence: 99%

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

Chen

Pang

Zhang

et al. 2018

Journal of Nanomaterials

Self Cite

View full text Add to dashboard Cite

Four-terminal tandem solar cells employing a perovskite top cell and crystalline silicon (Si) bottom cell offer a simpler pathway to surpass the efficiency limit of market-leading single-junction silicon solar cells. To obtain cost-effective top cells, it is crucial to develop transparent conductive electrodes with low parasitic absorption and manufacturing cost. The commonly used indium tin oxide (ITO) shows some drawbacks, like the increasing prices and high-energy magnetron sputtering process. Transparent metal electrodes are promising candidates owing to the simple evaporation process, facile process conditions, and high conductivity, and the cheaper silver (Ag) electrode with lower parasitic absorption than gold may be the better choice. In this work, efficient semitransparent perovskite solar cells (PSCs) were firstly developed by adopting the composite cathode of an ultrathin Ag electrode at its percolation threshold thickness (11 nm), a molybdenum oxide optical coupling layer, and a bathocuproine interfacial layer. The resulting power conversion efficiency (PCE) is 13.38% when the PSC is illuminated from the ITO side and the PCE is 8.34% from the Ag side, and no obvious current hysteresis can be observed. Furthermore, by stacking an industrial Si bottom cell (PCE = 14.2%) to build a four-terminal architecture, the overall PCEs of 17.03% (ITO side) and 11.60% (Ag side) can be obtained, which are 27% and 39% higher, respectively, than those of the perovskite top cell. Also, the PCE of the tandem cell has exceeded that of the reference Si solar cell by about 20%. This work provides an outlook to fabricate high-performance solar cells via the cost-effective pathway.

show abstract

Section: Methodsmentioning

confidence: 99%

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

Chen

Pang

Zhang

et al. 2018

Journal of Nanomaterials

Self Cite

View full text Add to dashboard Cite

show abstract

“…During the experiment, we observed that MB exhibited a certain solubility for perovskite precursors. The high‐quality of perovskite film might be attribute to the residual MB as digestive‐ripening agent in film, which promoted homogeneous nucleation, slowed down the growth rate of perovskite crystal and thereby enhanced grain sizes 38–40. The grain‐size distribution of these perovskite films measured by SEM were plotted in Figure S1, Supporting Information.…”

Section: Photovoltaic Performance Of Champion Pscs Based On Differentmentioning

confidence: 99%

A Nontoxic Bifunctional (Anti)Solvent as Digestive‐Ripening Agent for High‐Performance Perovskite Solar Cells

et al. 2020

View full text Add to dashboard Cite

The preparation of high‐quality perovskite films is important for achieving high‐performance perovskite solar cells (PSCs). The effective balance between solvent and antisolvent is an essential factor for regulating high‐quality perovskite film during the spin‐coating and thermal‐annealing steps. In this work, a greener, nonhalogenated, nontoxic bifunctional (anti)solvent, methyl benzoate (MB), is developed not only as an antisolvent to rapidly generate crystal seeds at the perovskite spin‐coating step, but also as a digestive‐ripening solvent for the perovskite precursors, which can prevent the loss of organic components during the thermal‐annealing stage and effectively suppress the formation of miscellaneous lead halide phases. As a result, this novel bifunctional (anti)solvent is employed in planar n–i–p PSCs for engineering high‐quality perovskite layers and thus achieving a power conversion efficiency up to 22.37% with negligible hysteresis and >1300 h stability. Moreover, due to the high boiling point and low‐volatility characteristic of MB, high‐performance PSCs are achieved reproducibly at different operating temperatures (22–34 °C). Therefore, this developed bifunctional solvent system can provide a promising platform toward globally upscaling and commercializing PSCs in all seasons and regions.

show abstract

“…), solution deposition is a simple and low-cost way to fabricate high efficiency PSCs. [5][6][21][22][23][24][25][26][27][28][29][30][31] Several researches have been reported in obtaining high quality perovskite films based on growth engineering, solvent engineering and so on. In 2016, M. Dar and his coworkers studied the impact of chloride on the conversion of lead halide into CH3NH3PbI3.…”

Section: Introductionmentioning

confidence: 99%

Stitching triple cation perovskite by a mixed anti-solvent process for high performance perovskite solar cells

et al. 2017

View full text Add to dashboard Cite

With the rapid development of organic-inorganic lead halide perovskite photovoltaics, increasingly more attentions are paid to explore the growth mechanism and precisely control the quality of perovskite films. In this study, we propose a "stitching effect" to fabricate high quality perovskite films by using chlorobenzene (CB) as an anti-solvent and isopropyl alcohol (IPA) as an additive into this anti-solvent. Because of the existence of IPA, CB can be efficiently released from the gaps of perovskite precursors and the perovskite film formation can be slightly modified in a controlled manner. More homogeneous surface morphology and larger grain size of perovskite films were achieved via this process. The reduced grain boundaries ensure low surface defect density and good carrier transport in the perovskite layer. Meanwhile, we also performed the Fourier transform infrared (FTIR) spectroscopy to investigate the film growth mechanism of unannealed and annealed perovskite films. Solar cells fabricated by using the "stitching effect" exhibited a best efficiency of 19.2%. Our results show that solvent and solvent additives dramatically influenced the formation and crystallization processes for perovskite materials due to their different coordination and extraction capabilities. This method presents a new path towards controlling the growth and morphology of perovskite films.

show abstract

Mixed-solvent-vapor annealing of perovskite for photovoltaic device efficiency enhancement

Cited by 121 publications

References 29 publications

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

A Nontoxic Bifunctional (Anti)Solvent as Digestive‐Ripening Agent for High‐Performance Perovskite Solar Cells

Stitching triple cation perovskite by a mixed anti-solvent process for high performance perovskite solar cells

Contact Info

Product

Resources

About