Autor: Ans, Muhammad - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: T-shaped-N-doped polycyclic aromatic hydrocarbons: A new concept of dopant-free organic hole-transporting materials for perovskite solar cells
Autorzy:: Kruszyńska, Joanna
Wagner, Jakub
Lindner, Marcin
Prochowicz, Daniel
Mahapatra, Apurba
Mrkyvkova, Nada
Yadav, Pankaj
Chavan, Rohit D.
Kubas, Adam
Akin, Seckin
Ans, Muhammad
Siffalovic, Peter
Wydawca:: ACS Publications
Opis:: Although metal halide perovskites are positioned as the most powerful light-harvesting materials for sustainable energy conversion, there is a need for a thorough understanding of molecular design principles that would guide better engineering of organic hole-transporting materials (HTMs), which are vital for boosting the performance and stability of perovskite solar cells (PSCs). To address this formidable challenge, here, we developed a new design strategy based on the curved N-doped polycyclic aromatic hydrocarbon (N-PAHs) merged with T-shaped phenazines being decorated with (phenyl)- di-p-methoxyphenylamine (OMeTAD) – N-PAH23/24 and -3,6-ditertbutyl carbazole. (TBCz) – N-PAH25/26. As N-PAH23/24 exhibited satisfying thermal stability, the comparative studies performed with various experimental and simulation methods revealed a pronounced correlation between the depth of the central cyclazine core and the form of T-shape units. This proved to be a crucial factor in controlling their π-π intermolecular interaction as well as self-assembly behavior with the perovskite layer, leading to enhanced humidity resistance, operational stability, and a maximum power conversion efficiency (PCE) of 20.39% denoted for N-PAH23, which is superior to the benchmarked device with doped spiro-OMeTAD (19.23%). These studies resulted not only in optimized stability and device performance but also opened a conceptually new chemical space in photovoltaic technology.
National Science Centre: grant SONATA BIS 10, no. 2020/38/E/ST5/00267; National Science Centre, Poland, grant no. 2018/31/D/ST5/00426; scholarship awarded by the Polish Ministry of Education and Science to outstanding young scientists (2/DSP/2021); Foundation for Polish Science: START (093.2023).
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Tytuł:: Revealing the Impact of Aging on Perovskite Solar Cells Employing Nickel Phthalocyanine-Based Hole Transporting Material
Autorzy:: Kruszyńska, Joanna
Fazlı, Hilal
Mahapatra, Apurba
Nikiforow, Kostiantyn
Unal, Muhittin
Yadav, Pankaj
Güzel, Emre
Biyiklioglu, Zekeriya
Chavan, Rohit D.
Prochowicz, Daniel
Akin, Seckin
Ans, Muhammad
Wydawca:: Wiley
Cytata wydawnicza:: M. Ans, Z. Biyiklioglu, A. Mahapatra, R. D. Chavan, J. Kruszyńska, M. Unal, H. Fazlı, K. Nikiforow, P. Yadav, S. Akin, E. Güzel, D. Prochowicz, Revealing the Impact of Aging on Perovskite Solar Cells Employing Nickel Phthalocyanine-Based Hole Transporting Material. Adv. Sci. 2024, 11, 2405284. https://doi.org/10.1002/advs.202405284
Opis:: National Science Centre (grant SONATA BIS 10, no. 2020/38/E/ST5/00267) and the Scientific Research Projects Coordination Unit of Sakarya University of Applied Sciences (Project Number: 212–2024).
The enhancement of the photovoltaic performance upon the aging process at particular environment is often observed in perovskite solar cells (PSCs), particularly for the devices with 2,2′,7,7′-tetrakis(N,N-di(4-methoxyphenyl) amino)−9,9′-spirobifluorene (spiro-OMeTAD) as hole transporting material (HTM). In this work, for the first time the effect of aging the typical n-i-p PSCs employing nickel phthalocyanine (coded as Bis-PF-Ni) solely as dopant-free HTM is investigated and as an additive in spiro-OMeTAD solution. This study reveals that the prolong aging of these devices at dry air condition (RH = 2%, 25 °C) is beneficial for the improvement of their performances. Various bulk and surface characterization techniques are utilized to understand the factors behind the spontaneous efficiency enhancement of the devices after storage. As a result, the changes in properties of the Bis-PF-Ni layer are observed and at perovskite/Bis-PF-Ni interface, which ultimately improves the charge transport and reduces non-radiative recombination. In addition, the devices with Bis-PF-Ni HTM reveal enhanced long-term ambient and thermal stability compared to the PSCs based on doped spiro-OMeTAD.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 3.

Tytuł:: Molecular Engineering of Azahomofullerene-based Electron Transporting Materials for Efficient and Stable Perovskite Solar Cells
Autorzy:: Kruszyńska, Joanna
Bończak, Bartłomiej
Mahapatra, Apurba
Nikiforow, Kostiantyn
Paczesny, Jan
Yadav, Pankaj
Unal, Muhittin
Nawrocki, Jan
Sadegh, Faranak
Chavan, Rohit D.
Prochowicz, Daniel
Akin, Seckin
Ans, Muhammad
Wydawca:: ACS Publications
Cytata wydawnicza:: Chem. Mater. 2023, 35, 8309−8320. https://doi.org/10.1021/acs.chemmater.3c01995
Opis:: The rational molecular design of fullerene-based molecules with exceptional physical and electrical properties is in high demand to ensure efficient charge transport at the perovskite/electron transport layer interface. In this work, novel azahomofullerene (AHF) is designed, synthesized, and introduced as the interlayer between the SnO2/perovskite interface in planar n−i−p heterojunction perovskite solar cells (PSCs). The AHF molecule (denoted as AHF-4) is proven to enhance charge transfer capability compared to the commonly used fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) due to its superior coordination interaction and electronic coupling with the SnO2 surface. In addition, the AHF-4 interlayer concurrently improves the quality of the perovskite film and reduces charge recombination in PSCs. The resultant AHF-4-based device exhibits a maximum efficiency of 21.43% with lower hysteresis compared to the PCBM device (18.56%). Benefiting from the enhanced stability of the AHF-4 film toward light soaking and elevated temperature, the AHF-4-based devices show improved stability under continuous 1 sun illumination at the maximum power point and 45 °C. Our work opens a new direction to the design of AHF derivatives with favorable physical and electrical properties as an interlayer material to improve both the performance and stability of PSCs.
National Science Centre
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 4.

Tytuł:: Molecular modification of spiro[fluorene-9,90- xanthene]-based dopant-free hole transporting materials for perovskite solar cells
Autorzy:: Kruszyńska, Joanna
Kumar, Deepak
Kumar, Kodali Phani
Singh, Surya Prakash
Kumar, Vinay
Yadagiri, Bommaramoni
Mahapatra, Apurba
Mrkyvkova, Nada
Yadav, Pankaj
Nawrocki, Jan
Nikiforow, Kostiantin
Chavan, Rohit D.
Prochowicz, Daniel
Akin, Seckin
Ans, Muhammad
Siffalovic, Peter
Wydawca:: Royal Society of Chemistry
Cytata wydawnicza:: J. Mater. Chem. A, 2024, 12, 8370. DOI https://doi.org/10.1039/D3TA07851E
Opis:: The molecular engineering of organic hole-transporting materials (HTMs) plays an important role in enhancing the performance and stability of perovskite solar cells (PSCs) as well as reducing their fabrication cost. Here, two low-cost spiro-OMeTAD analogues, namely SP-Naph and SP-SMe, featuring a spiro[fluorene-9,9-xanthene] (SFX) central core and asymmetric subunits are designed and synthesized. Specifically, the SFX core in the SP-Naph molecule is substituted with dimethoxyphenylnaphthylamine subunits to enhance conductivity and charge transport properties by expansion of the p-conjugated structure. On the other hand, in the molecular structure of SP-SMe, the methoxy groups (–OMe) from diphenylamine units were partially replaced with the methylsulfanyl groups (–SMe) to increase interaction with the perovskite surface through the “Lewis soft” S atoms. By combining various experimental and simulation methods, thestructure–property relationship of the newly synthesized HTMs was thoroughly investigated. The suitable HOMO energy level with the perovskite layer together with superior photoelectric properties and enhanced thermostability and humidity resistivity are obtained for the SP-SMe HTM. As a result, the planar n–i–p PSC with the dopant-free SP-SMe HTM yields a maximum power conversion efficiency (PCE) of 21.95%, which outperforms that with SP-Naph (20.51%) and doped spiro-OMeTAD (19.23%). Importantly, the device with SP-SMe also reveals enhanced operational stability under continuous 1 sun illumination and thermal stability at 65 °C. These findings provide valuable insight for the rational design of dopant-free organic HTMs based on the SFX core, which would promote the development of highly efficient and stable devices.
National Science Centre
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 5.

Tytuł:: Dual Interface Modification for Reduced Nonradiative Recombination in n–i–p Methylammonium-Free Perovskite Solar Cells
Autorzy:: M. Barea, Eva
Rodriguez-Pereira, Jhonatan
Zarazua, Isaac
Contreras-Solorio, David Armando
Pascual, Jorge
Turren-Cruz, Silver-Hamill
Esparza, Diego
Akin, Seckin
Mora-Seró, Iván
Prochowicz, Daniel
Rodriguez-Perez, Juan José
Martinez-Pastor, Juan P.
Ans, Muhammad
Diaz Perez, Teresa
Wydawca:: American Chemical Society
Cytata wydawnicza:: ACS Appl. Mater. Interfaces 2025, 17, 8610−8618. https://doi.org/10.1021/acsami.4c20462
Opis:: High defect concentrations at the interfaces are the basis of charge extraction losses and instability in perovskite solar cells. Surface engineering with organic cations is a common practice to solve this issue. However, the full implications of the counteranions of these cations for device functioning are often neglected. In this work, we used 4-fluorophenethylammonium cation with varying halide counteranions for the modification of both interfaces in methylammonium-free Pb-based n–i–p devices, observing significant differences among iodide, bromide, and chloride. The cation treatment of the buried and top interfaces resulted in improved surface quality of the perovskite films and largely improved carrier dynamics with reduced nonradiative recombination. Consequently, the optimal interface-modified methylammonium-free perovskite solar cells surpassed 20% efficiency and demonstrated remarkable operational stability. Our findings underscore the potential of comprehensive surface engineering strategies in advancing the perovskite film and device quality, thereby facilitating their broader and more successful applications.
S.H.T.-C. gratefully acknowledges funding from the Ministry of Science and Innovation of Spain under Ayudas Ramón y Cajal (RYC2022-035578-I) and POLONEZ BIS Project No. 2021/43/P/ST5/01780 cofunded by the National Science Centre and the EU’s H2020 research and innovation programme under the MSCA 945339 for the financial support during this work. J.J.R.-P. acknowledges the CONAHCyT Mexico for PHD scholarship. J.P. acknowledges support from Energy for future – E4F Postdoctoral fellowship program H2020-MSCA-COFUND-2020 (101034297). J.R.-P. acknowledge the Ministry of Education, Youth and Sports of the Czech Republic for supporting CEMNAT (LM2023037) infrastructure for providing XPS access. E.M.B. acknowledges project EPCESBI–UJI-B2022-08. This work was partially supported by the project “Step-Up” TED2021-131600B-C31, funded by the Ministerio de Ciencia e Innovación MCIN/AEI/10.13039/501100011033 and the European Union “NextGeneration EU/PRTR.”
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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