A research team led by the Dalian Institute of Chemical Physics in China has used Tetramethylammonium chloride in the manufacture of perovskiet solar cells and modules, which shows that it improved both stability and efficiency results. The 10 cm x 8 cm modules of the group reached a certified 21.60% power conversion -efficiency. The new interfacial modification made the use of scalable mescoating possible to deposit both transport layers and the perovskiet layer.
Researchers led by the Dalian Institute of Chemical Physics (DICP) have used tetramethylammonium chloride in a tin (IV) oxide-electron-transport layer-layer-lotal colloidal solution to tackle two well-known perovskite solar problems: stability in the long-term perception for wholesale.
The approach reportedly strengthened the interface binding and reduced structural defects, resulting in the manufacture of Tri-Layer Blade devices that had promising stability results and power conversion efficiency. They demonstrated 26.11%-efficient small cells and mini modules with aperture areas of 57.2 cm2 certified with an efficiency of 21.60%.
The Novelty of the Research Lies in the “Synergistic Integration of the Scalable Manufacturing Process Using Blade Coating and the Innovative Interfacial Treatment of the Tin (IV) Oxide (SNO2) Colloid” With Tetramethylammonium Chloride, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalian, or Dalianhylamone). Chemical Physics and First Author of the Research
“Although mescoating low temperature, manufacture with a large area with large parts, is suitable for flexible perovskiet modules, the use of TMACL is crucial as a bifunctional border area to improve the performance of the device,” said Zhu, “said Zhu,” Zhu said PV -MagazineExplaining that TMACL not only improved the “dispersion and film-forming properties of SNO2 colloids”, but also effectively interfacial defects passed on the SNO2/Perovskite interface.
In the study “Interfacial Molecular Anchor improves the performance of Environmental Persal Solar cells with a whole welder“Published in JouleThe researchers described the research and validation of the results in Perovskiet -Zonne devices of different sizes, including how mescoating was used.
Zhu noted that TMACL treatment works as a surface passivator that increases the formation energy of iodine vacancies and suppresses non-rays recombination on the interface, leading to higher open circuit tension and filling factor.
It also makes a relatively low temperature and manufacture with lesser costs possible thanks to mescoating processes. For example, the research team noted that the processing of low temperatures at 100 ° C is a “merit” of the approach, making flexible solar devices possible.
The team said that his experimental flexible solar cells of the Perovskiet achieved efficiency of 23.54%, better than the operating device made with Pristine SNO2 ETL. In addition, it retained 95.30% of its initial efficiency after 500 bending cycles, compared to 63.17% for the control device.
Other benefits were noticed by Zhu. “In contrast to traditional spincoating, which depends on high pure solvents and is limited to small-scale production, MES or on print-based coating continuous manufacture of films on meter scale makes possible, with material use percentages of more than 90% and energy consumption reduced by 50%,” Zhu explained.
It also costs “only one tenth as much as conventional interface modification materials and eliminates the need for extra processing steps.” This, combined with the performance, makes the “proposed method considerably more suitable for large -scale, cost -effective and powerful perovskite solar module production.”
The devices used in the experiments were made as follows: the blade-coated TMACL-SnO2 ETL was applied to conductive indium tin oxide (ITO) substrates, followed by nitrogen-air-blade-coating of the perovskite layer, followed by a thermal annealing step, and blade coating of the Spiro-Tad Hole Transport Layer (HTL) and the Metal Electrode Gold (AU) Deposition.
Cross-sectional Scanning Electron (SEM) Imaging confirmed a “dense perfect layer due to low integrity” of the ETL/Perovskite/HTL structures, according to the research.
The devices had a lifespan of approximately 1500 hours, as verified by International Summit on Organic PV Stability (ISOs) Outdoor, Isos-O, Tests. The location of testing in Dalian, China, with a typical relative humidity of 40% during the test period.
The research team is planning to continue the scale and to produce uniform and robust self-assembled monolaagen (SAMs) with mescoating techniques that show reproducibility and stability of the large area device. “In addition to further optimizing the intervention technology under environmental processing conditions, the team will give priority to in -depth studies for the sustainability of the environment, light -saturated stability and mechanical resilience under repeated distortion,” Zhu said.
The participating research teams who participated in DICP were in the effort of Liaoning Normal University, Hubei University, Eastern Institute of Technology, University of Chinese Academy of Sciences, Wuhan Textile University and Zhejiang University, together with Australian University of Technology.
Image: Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences
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