Ultrafast Dynamics Group
Frédéric Laquai's Group

Publications

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Total result(s) found: 15
  •  Afterglow Effects as a Tool to Screen Emissive Non-Geminate Charge Recombination Processes in Organic Photovoltaic Composites

    P. E. Keivanidis, G. Itskos, Z. Kan, E. A. Sarduy, H. Goudarzi, V. Kamm, F. Laquai, W. Zhang, C. J. Brabec, G. Floudas, I. McCulloch

    ACS Appl. Mater. Interfaces 2019, DOI: 10.1021/acsami.9b1603

Keywords:
solar cell; photodetector; perylene diimides; fill factor; charge trapping; delayed luminescence; multiple-diode equivalent circuit; non-fullerene acceptors
  • Novel Wide Bandgap Non-Fullerene Acceptors for Efficient Tandem Organic Solar Cells

    Y. Firdaus, Q. He,Y. Lin, F. A. A. Nugroho, V. M. Le Corre, E. Yengel, A. H. Balawi, A. Seitkhan, F. Laquai, C. Langhammer, F.Liu, M. Heeney and T. D. Anthopoulos, J. Mater. Chem. A, 2019, DOI: 10.1039/C9TA11752K

    ​​
Keywords:
Organic photovoltai, PBDB-T:IDTT, PTB7-Th:IEICO
  • Impact of Residual Lead Iodide on Photophysical Properties of Lead Triiodide Perovskite Solar Cells


    J. Khan, A. Sheikh, M. Alamoudi, D. Barrit, E. Ugur, F.  Laquai, A. Amassian

    Energy Technology 2019, DOI.org/10.1002/ente.201900627 
Keywords:
charge carrier recombination, interfacial recombination, lead iodide, perovskites, spectroscopy
  • Highly-Crystalline Near-Infrared Acceptor Enabling Simultaneous Efficiency and Photostability Boosting in High-Performance Ternary Organic Solar Cells


    H. Yin, C. Zhang, H. Hu, S. Karuthedath, Y. Gao, H. Tang, C. Yan, L. Cui, P. W. K. Fong, Z. Zhang, Y. Gao, J. Yang, Z.  Xiao, L. Ding, F. Laquai, S. K. So and G. Li​, ACS Appl. Mater. Interfaces, DOI: 10.1021/acsami.9b12833

Keywords:
organic solar cell; photostability; ternary solar cell; near-infrared acceptor
  • Enhancing the charge extraction and stability of perovskite solar cells using strontium titanate (SrTiO3) electron transport layer.

    M. Neophytou, M. De Bastiani, N. Gasparini, E. Aydin, E. Ugur, A. Seitkhan, F. Moruzzi, Y. Choaie, A. J. Ramadan, J. Troughton, R. Hallani, A. Savva, L. Tsetseris, S. Inal, D. Baran, F. Laquai, T. D. Anthopoulos, H. J. Snaith, S. De Wolf, I. McCulloch,

    ACS Applied Energy Materials 2019, DOI: 10.1021/acsaem.9b01567

Keywords:
electron selective contact, strontium titanate, perovskite solar cells
  • Carrier Extraction from Perovskite to Polymeric Charge Transport Layers Probed by Ultrafast Transient Absorption Spectroscopy. 
    E. Ugur, J. Khan, E. Aydin, M. Wang, M. Kirkus, M. Neophytou, I. McCulloch, S. De Wolf, F. Laquai, 

    ACS Journal of Physical Chemistry Letters 2019, DOI: 10.1021/acs.jpclett.9b02502

Keywords:
perovskite solar cells, ultrafast spectroscopy, interface recombination, carrier dynamics, hole extraction
  • 17% Efficient Organic Solar Cells Based on Liquid Exfoliated WS2 as a Replacement for PEDOT:PSS 


    Y. Lin, B. Adilbekova, Y. Firdaus, E. Yengel, H. Faber, M. Sajjad, X. Zheng, E. Yarali, A. Seitkhan, O. M. Bakr, A. El-Labban, U. Schwingenschlögl, V. Tung, I. McCulloch, F. Laquai, and T. D. Anthopoulos.

    Advanced Materials, 1902965. doi:10.1002/adma.201902965​​​​

Keywords:
2D transition metal disulfides, hole transport layers, liquid exfoliation, nonfullerene organic solar cells, WS2, MoS2
  • Impact of Fullerene on the Photophysics of Ternary Small Molecule Organic Solar Cells


    S. Karuthedath, Y. Firdaus, R-Z. Liang, J. Gorenflot, P. M. Beaujuge, T. D. Anthopoulos, F. Laquai, 

    Advanced Energy Materials 2019, 201901443

Keywords:
bulk heterojunction, charge generation, energy transfer, fullerene, ternary organic solar cells, ultrafast spectroscopy
  • Impact of polymorphism on the optoelectronic properties of a low-bandgap semiconducting polymer​

    M. Li, A. H. Balawi, P. J. Leenaers, L. Ning, G. H. L. Heintges, T. Marszalek, W. Pisula, M. M. Wienk, S. C. J. Meskers, Y. Yi, F. Laquai and R. A. J. Janssen, Nature Communicationsvolume 10, Article number: 2867 (2019)
Keywords:
polymer, 3-alkylthiophene, P(NDI2OD-T2)
  • Direct and energytransfer mediated charge transfer state formation and recombination in triangulenespacerperylenediimide multichromophores: lessons for photovoltaic applications

    A. H. Balawi, S. Stappert, J. Gorenflot, C. Li, K. Müllen, D. Andrienko, F. Laquai, J. Phys. Chem. C 2019, DOI: 10.1021/acs.jpcc.9b05149
Keywords:
Charge transfer, triangulene‐spacer‐perylenediimide multichromophores, UV−vis spectrum, TD-DFT
  • P3HT Molecular Weight Determines the Performance of P3HT:O-IDTBR Solar Cells

    J. I. Khan, R. S. Ashraf, M. A. Alamoudi, M. N. Nabi, H. N. Mohammed, A. Wadsworth, Y. Firdaus, W. Zhang, T. D. Anthopoulos, I. McCulloch, F. Laquai
    Solar RRL​, 2019, 
    DOI: 10.1002/solr.201900023.​
    ​​
Keywords:
non-fullerene acceptors, transient absorption, molecular weight, P3HT, O-IDTBR
Keywords:
p-i-n perovskite solar cell, interface engineering, organic molecule, cathode interlayer, semi-transparent solar cell
  • Negligible Energy Loss During Charge Generation in Small-Molecule/Fullerene Bulk-Heterojunction Solar Cells Leads 

    to Open-Circuit Voltage over 1.10 V


    M. Babics, T. Duan, A. H. Balawi, R.-Z. Liang, F. Cruciani, I.-D. Carja, D. Gottlieb, I. McCulloch, K. Vandewal, F. Laquai and P. M. Beaujuge ACS Appl. Energy Mater., 2019, DOI: 10.1021/acsaem.8b02020​

Keywords:
organic photovoltaics, small-molecule donor, oligothiophene, fluorination, high open-circuit voltage, low energy loss
  • Key Parameters Requirements for NonFullereneBased Organic Solar Cells with Power Conversion Efficiency >20%


    Y. Firdaus, V. M. Le Corre, J. I. Khan, Z. Kan, F. Laquai, P. M. Beaujuge, T.  D. Anthopoulos

    Adv. Sci. 2019, 1802028​

Keywords:
bulk‐heterojunction solar cells, drift‐diffusion model, nonfullerene acceptors, numerical device simulations, organic photovoltaics, tandem devices
  • Terminal Group Engineering for Small-Molecule Donor Boosts the Performance of Nonfullerene Organic Solar Cells

    T. Duan, H. Tang, R .-Z.  Liang, J. Lv, Z. Kan, R. Singh, M. Kumar, Z. Xiao, S. Lu  and F. Laquai, J. Mater. Chem. A, 2019, DOI: 10.1039/C8TA11420J.​
Keywords:
BDT-RO, BDT-RN, DR3TBDTT