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ETL 1

PEDOT:PSS 1

PSCs 1

ST-PSCs 1

SnO2 film 1

patterning 1

spray coating 1

transparent electrode 1

ultrafast laser 1

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Ultrafast-laser-treated poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) electrodes with enhanced conductivity and transparency for semitransparent perovskite solar cells

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 206-216 doi: 10.1007/s11705-022-2203-x

Abstract: Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is an important organic electrode for solution-processed low-cost electronic devices. However, it requires doping and post-solvent treatment to improve its conductivity, and the chemicals used for such treatments may affect the device fabrication process. In this study, we developed a novel route for exploiting ultrafast lasers (femtosecond and picosecond laser) to simultaneously enhance the conductivity and transparency of PEDOT:PSS films and fabricate patterned solution-processed electrodes for electronic devices. The conductivity of the PEDOT:PSS film was improved by three orders of magnitude (from 3.1 to 1024 S·cm–1), and high transparency of up to 88.5% (average visible transmittance, AVT) was achieved. Raman and depth-profiling X-ray photoelectron spectroscopy revealed that the oxidation level of PEDOT was enhanced, thereby increasing the carrier concentration. The surface PSS content also decreased, which is beneficial to the carrier mobility, resulting in significantly enhanced electrical conductivity. Further, we fabricated semitransparent perovskite solar cells using the as-made PEDOT:PSS as the transparent top electrodes, and a power conversion efficiency of 7.39% was achieved with 22.63% AVT. Thus, the proposed route for synthesizing conductive and transparent electrodes is promising for vacuum and doping-free electronics.

Keywords： PEDOT:PSS     ultrafast laser     transparent electrode     ST-PSCs     patterning    

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Spray-coated SnO

Yaqin Wang, Lin Yang, Chunxiang Dall’Agnese, Gang Chen, Ai-Jun Li, Xiao-Feng Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 180-186 doi: 10.1007/s11705-020-1917-x

Abstract: been proven to be an effective electron transport layer (ETL) material for perovskite solar cells (PSCsThen, we employ a SnO film prepared using the spray coating method as an ETL for PSCs.spray-coated SnO ETL achieves a power conversion efficiency of 17.78%, which is comparable to that of PSCsshows that SnO films prepared by spray coating can be applied as ETLs for stable and high-efficiency PSCsproposed method involves low material consumption, it enables the low-cost and large-scale production of PSCs

Keywords： spray coating     SnO2 film     ETL     PSCs    

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Title Author Date Type Operation

Ultrafast-laser-treated poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) electrodes with enhanced conductivity and transparency for semitransparent perovskite solar cells

Journal Article

Spray-coated SnO

Yaqin Wang, Lin Yang, Chunxiang Dall’Agnese, Gang Chen, Ai-Jun Li, Xiao-Feng Wang

Journal Article