Influence of Spin-Coating Methods on the Properties of Planar Solar Cells Based on Ambient-Air-Processed Triple-Cation Mixed-Halide Perovskites

CsPbI3 PSCs fabricated in an open environment (RH ∼ 50%) with an easy one-step anti-solvent hot-substrate spin-coating method achieved stable PCEs of up to 15.91%.

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Efficient Ag-Doped Perovskite Solar Cells Fabricated in Ambient Air

Crystals ◽

10.3390/cryst11121521 ◽

2021 ◽

Vol 11 (12) ◽

pp. 1521

Author(s):

Jiabin Hao ◽

Zeming Wang ◽

Huiying Hao ◽

Guanlei Wang ◽

Hongcheng Gao ◽

...

Keyword(s):

Solar Cells ◽

Spin Coating ◽

High Efficiency ◽

Perovskite Solar Cells ◽

Ambient Air ◽

Nucleation Density ◽

Perovskite Material ◽

Coating Method ◽

One Step ◽

Improved Performance

So far, it is still a great challenge to prepare high efficiency organic–inorganic perovskite solar cells in ambient air. Specifically, moisture is easily combined with the perovskite material during the spin-coating process, which result in porous perovskite films with poor surface morphology. In this study, we investigated crystalline Ag-doped perovskite films by a one-step spin-coating method in air with 30–40% relative humidity (RH), in which ethyl acetate (EA) was used as antisolvent can absorb moisture in air to reduced nucleation density. More significantly, EA is a feasible and environmentally friendly solvent to replace highly toxic solvent. Moreover, 1.0% Ag-doped device shows a highest power conversion efficiency (PCE) of 14.36%. The improved performance is not only ascribed to the superior CH3NH3PbI3 film with high crystallinity but to the versatile tunability of energy band structure.

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H2O/O2 Vapor Annealing Effect on Spin Coating Alumina Thin Films for Passivation of Silicon Solar Cells

International Journal of Photoenergy ◽

10.1155/2019/4604932 ◽

2019 ◽

Vol 2019 ◽

pp. 1-7

Author(s):

Abdullah Uzum ◽

Hiroyuki Kanda ◽

Takuma Noguchi ◽

Yuya Nakazawa ◽

Shota Taniwaki ◽

...

Keyword(s):

Thin Films ◽

Solar Cells ◽

Spin Coating ◽

Crystalline Silicon ◽

Low Cost ◽

Ambient Air ◽

Silicon Solar Cells ◽

Crystalline Silicon Solar Cells ◽

Passivation Layers ◽

Coating Method

Aluminum acetylacetonate-based AlOx thin films were introduced as a low-cost, high-quality passivation layers for crystalline silicon solar cells. Films were formed by a spin coating method on p-type silicon substrates at 450°C in ambient air, O2, or water vapor (H2O/O2) for 15 or 120 min. XPS analysis confirms the AlOx formation and reveals a high intensity of interfacial SiOx at the AlOx/Si interface of processed wafers. Ambient H2O/O2 was found to be more beneficial for the activation of introduced AlOx passivation films which offers high lifetime improvements with a low thermal budget. Carrier lifetime measurements provides that symmetrically coated wafers reach 119.3 μs and 248.3 μs after annealing in ambient H2O/O2 for 15 min and 120 min, respectively.

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Influence of CsPbBr3/TiO2 interfaces deposited with magnetron sputtering and spin-coating methods on the open voltage deficit and efficiency of all-inorganic CsPbBr3 planar solar cells

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2020.157900 ◽

2020 ◽

pp. 157900

Author(s):

Fei Zhao ◽

Yixin Guo ◽

Xiang Wang ◽

Jun Zhou ◽

Jiahua Tao ◽

...

Keyword(s):

Solar Cells ◽

Magnetron Sputtering ◽

Spin Coating ◽

Coating Methods

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Toward a Scalable Fabrication of Perovskite Solar Cells under Fully Ambient Air Atmosphere: From Spin-Coating to Inkjet-Printing of Perovskite Absorbent Layer

Electronics ◽

10.3390/electronics10161904 ◽

2021 ◽

Vol 10 (16) ◽

pp. 1904

Author(s):

Aggeliki Karavioti ◽

Dimitris A. Chalkias ◽

Giannis Katsagounos ◽

Argyroula Mourtzikou ◽

Alexandros N. Kalarakis ◽

...

Keyword(s):

Solar Cells ◽

Inkjet Printing ◽

Spin Coating ◽

Internal Quantum Efficiency ◽

Perovskite Solar Cells ◽

Ambient Air ◽

Hole Transport ◽

Transport Layer ◽

Ambient Atmosphere ◽

Scale Production

Up until now, the vast majority of perovskite solar cells (PSCs) have relied on the spin-coating of perovskite precursor solution under inert fully controlled conditions, with the performance of solar cells that are developed by alternative techniques and under an ambient atmosphere to lag far behind. This impedes the technology transfer from the laboratory to industrial large-scale production; thus, the investigation of new scalable techniques should be thoroughly considered. The present work constitutes one of the few investigations on the application of inkjet-printing as an advanced alternative technique to the conventional spin-coating technique used for the fabrication of fully ambient air-processed perovskite absorbent layers for carbon-based hole transport layer-free PSCs. A systematic study of the characteristics of the perovskite material and solar cells indicated that the coffee-ring effect combined with poor ink penetration into the mesoporous network of the anode semiconductor were the main reasons for obtaining poor perovskite structure morphology and lower PSC performance by inkjet-printing, which arises from a lower internal quantum efficiency and an increased charge transfer and recombination rate. On the other hand, the crystallinity and optical characteristics of the materials obtained by the compared techniques did not differ considerably, while small differences were observed in the hysteretic behavior and long-term stability of the solar cells.

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