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  • 1
    Online Resource
    Online Resource
    Characterization on Highly Efficient Perovskite Solar Cells Made from One‐Step and Two‐Step Solution Processes
    Wiley ; 2021
    In:  Solar RRL Vol. 5, No. 7 ( 2021-07)
    Details
    In: Solar RRL, Wiley, Vol. 5, No. 7 ( 2021-07)
    Abstract: One‐step and two‐step methods are regarded as the main solution processes for preparing organic metal halide perovskite (PVSK) films. Both of them are also reported to produce high‐quality PVSK films and high‐performance devices. Herein, two highly efficient perovskite solar cells (PSCs) made by one‐step (19.91%) and two‐step (20.63%) methods are analyzed in detail. Particularly, the nucleation mechanism and structural characteristics of the PVSK films made from different methods are systematically discussed. Characterizations from field‐emission scanning electron microscopy (FE‐SEM), atomic force microscopy (AFM), Kelvin probe force microscopy (KPFM), and time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) show that the ion distribution in the PVSK film made by the one‐step method is less uniform horizontally, while the PVSK film made by the two‐step method is less uniform vertically. Both films contain a considerable amount of unreacted species, including PbI 2 , cations, and halides, which are relics from their parental fabricating process. Despite these significant differences, both films are capable to deliver nearly 20% conversion efficiency. This study depicts a clear picture of the PVSK film properties made by one‐step and two‐step methods and provides plentiful information for further improvement in the future.
    Type of Medium: Online Resource
    ISSN: 2367-198X , 2367-198X
    URL: Issue
    URL: Article
    DOI: 10.1002/solr.v5.7
    DOI: 10.1002/solr.202100109
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2882014-9
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  • 2
    Online Resource
    Online Resource
    11‐2: Invited Paper: Full color MicroLED Micro‐Display Technology for AR Applications with µ‐PixeLED Solutions
    Wiley ; 2024
    In:  SID Symposium Digest of Technical Papers Vol. 55, No. 1 ( 2024-06), p. 108-110
    Details
    In: SID Symposium Digest of Technical Papers, Wiley, Vol. 55, No. 1 ( 2024-06), p. 108-110
    Abstract: With the rapid development of AR technology, the need for lightweight and high‐brightness displays has become crucial. MicroLED technology is one of the few feasible solutions for this. The requirements of achieving ultra‐high PPI, integrating RGB full colors, and reducing the chip size to less than 3μm on a CMOS backplane present significant challenge. This paper will discuss the fabrication of a full‐color, high‐PPI micro‐display.
    Type of Medium: Online Resource
    ISSN: 0097-966X , 2168-0159
    URL: Issue
    URL: Article
    DOI: 10.1002/sdtp.v55.1
    DOI: 10.1002/sdtp.17465
    Language: English
    Publisher: Wiley
    Publication Date: 2024
    detail.hit.zdb_id: 2526337-7
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  • 3
    Online Resource
    Online Resource
    Investigation of the stoichiometric deviation between the mixed cation, mixed halide lead perovskite thin film and its precursor solution
    Royal Society of Chemistry (RSC) ; 2024
    In:  Journal of Materials Chemistry C Vol. 12, No. 17 ( 2024), p. 6341-6349
    Details
    In: Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 12, No. 17 ( 2024), p. 6341-6349
    Abstract: The compositional engineering of an organo-lead halide perovskite plays a crucial role in determining the versatility and stability of photovoltaic device performance, which is vital for its commercialization. Manipulating the ion composition of the perovskite ABX 3 crystal structure within a reasonable tolerance factor range allows for achieving tunable bandgaps and material stability. While perovskite solar cells have shown comparable performance to silicon crystalline solar cells, research groups pay little attention to the stoichiometry of the final perovskite film. The precise manipulation of perovskite's chemical composition is critical in determining its cell reproducibility. The UV-Vis spectrophotometer is a potent and widely used instrument for distinguishing precursors in solutions in various fields. Herein, we report for the first time that UV-Vis spectra are an applicable tool in determining the formulation of perovskite films. We demonstrate a successful method for separating the organic and inorganic components of the perovskite film, establishing calibration curves, and performing detailed calculations. Our findings reveal that the chemical composition of perovskite films does not match the proportion of the precursor solutions. This study could lay the groundwork for future research on quantifying perovskite films and explaining the high reproducibility trends observed in perovskite solar cells.
    Type of Medium: Online Resource
    ISSN: 2050-7526 , 2050-7534
    URL: Article
    DOI: 10.1039/D4TC00318G
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2024
    detail.hit.zdb_id: 2702245-6
    detail.hit.zdb_id: 2705156-0
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