Ultrafast Dynamics Group
Frédéric Laquai's Group

Publications

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Total result(s) found: 11
  • Charge Carrier Generation, Recombination, and Extraction in Polymer:Fullerene Bulk Heterojunction Organic Solar Cells

    Laquai, F., Andrienko, D., Deibel, C., Neher, D
    Advances in Polymer Science 272, Springer 2017, pp. 267-291​

Keywords:
Charge extraction, Charge generation, Charge recombination, Organic solar cells, PBT7, PBTTT, PCPDTBT
  • Polymer Main-Chain Substitution Effects on the Efficiency of Nonfullerene BHJ Solar Cells

    Y. Firdaus, L.P. Maffei, F. Cruciani, M.A. Müller, S. Liu, S. Lopatin, N. Wehbe, G.O.N. Ndwaja, A. Amassian, F. Laquai, P.M. Beaujuge.
    Adv. Energy Mater. 2017, 7, 1700834
    DOI: 10.1002/aenm.201700834

Keywords:
3,4-difluorothiophene, benzo[1,2-b:4,5-b′]dithiophene (BDT), ITIC, nonfullerene acceptor, organic photovoltaics, polymer solar cells
  • Thieno[3,4-c]pyrrole-4,6-dione–based Polymer Acceptors for High Open-Circuit Voltage All-Polymer Solar Cells

    S. Liu, X. Song, S. Thomas, Z. Kan, F. Cruciano, F. Laquai, J.-L. Bredas, P.M. Beaujuge
    Adv. Energy Mater. 2017, 7, 1602574
Keywords:
3,4-difluorothiophene; all-polymer solar cells; organic photovoltaics; polymer acceptors; thieno[3,4-c]pyrrole-4,6-dione
  • From Recombination Dynamics to Device Performance: Quantifying the Efficiency of Exciton Dissociation, Charge Separation, and Extraction in Bulk Heterojunction Solar Cells with Fluorine-Substituted Polymer Donors

    J. Gorenflot, A. Paulke, F. Piersimoni, J. Wolf, Z. Kan, F. Cruciani, A. El Labban, D. Neher, P.M. Beaujuge, F. Laquai.
    Adv. Energy Mater. 2017, DOI: 10.1002/ aenm.201701678

Keywords:
bulk heterojunction, charge generation yield, charge recombination yield, polymer solar cells, transient absorption spectroscopy
  • ​Solvent Vapor Annealing-Mediated Crystallization Directs Charge Generation, Recombination and Extraction in BHJ Solar Cells 

    M. Babics, R.-Z. Liang, K. Wang, F. Cruciani, Z. Kan, M. Wohlfahrt, M.-C. Tang, F. Laquai, and P.M. Beaujuge.
    Chem. Mater. 2017, DOI: 10.1021/acs.chemmater.7b04286​

Keywords:
Charge Generation, Recombination, Extraction, Solar Cells
  • Molecular Doping of the Hole-Transporting Layer for Efficient, Single-Step-Deposited Colloidal Quantum Dot Photovoltaics 

    A.R. Kirmani, F.P. Garcia De Arquer, J.Z. Fan, J.I. Khan, G. Walters, S. Hoogland, N. Wehbe, M.M. Said, S. Barlow, F. Laquai,
    E.H. Sargent, A. Amassian.

    ACS Energy Lett. 2017, 2 (9), 1952-1959
    DOI: 10.1021/acsenergylett.7b00540
    ​​​​
Keywords:
Molecular Doping, Quantum Dot Photovoltaics
  • Performance limitations in thieno[3,4-c]pyrrole-4,6-dione-based polymer:ITIC solar cells
    Fan Yang, Deping Qian, Ahmed Hesham Balawi, Yang Wu, Wei Ma, Frédéric Laquai, Zheng Tang, Fengling Zhang and Weiwei Li
    Phys. Chem. Chem. Phys., 2017,19, 23990-23998 
    ​​​​​​​
    ​​​​​​​
Keywords:
Voltage losses, Quantum Efficiency Losses, Thin Film Morphology
  • Improved Morphology and Efficiency of n–i–p Planar Perovskite Solar Cells by Processing with Glycol Ether Additives​
    Esma Ugur, Arif D. Sheikh†, Rahim Munir, Jafar I. Khan, Dounya Barrit, Aram Amassian, Frédéric Laquai

    ACS Energy Lett.20172, pp 1960–1968
Keywords:
Perovskite, Glycol Ether Additives, two-step proccess
  • Trap-Free Hot Carrier Relaxation in Lead–Halide Perovskite Films.
    Simon A. Bretschneider, Frédéric Laquai, and Mischa Bonn
    J. Phys. Chem. C, 2017, 121 (21), pp 11201–11206 
Keywords:
Lead-Halide, Perovskite, Hot carriers
  • Generation of Triplet Excited States via Photoinduced Electron Transfer in meso-anthra-BODIPY: Fluorogenic Response Towards Singlet Oxygen in Solution and in Vitro
    Mikhail A. Filatov, Safakath Karuthedath, Pavel M. Polestshuk, Huguette Savoie, Keith J. Flanagan, Cindy Sy, Elisabeth Sitte, Maxime Telitchko, Frédéric Laquai , Ross W. Boyle, Mathias O. Senge
    J. Am. Chem. Soc., 2017, 139 (18), pp 6282–6285 
Keywords:
Triplet Excited States, Photoinduced Electron Transfer
  • Programmable and coherent crystallization of semiconductors​

    Liyang Yu, Muhammad R. Niazi, Guy O. Ngongang Ndjawa, Ruipeng Li, Ahmad R. Kirmani, Rahim Munir, Ahmed H. Balawi, Frédéric Laquai and Aram Amassian

    Science Advances  03 Mar 2017:
    Vol. 3, no. 3, e1602462
    DOI: 10.1126/sciadv.1602462

Keywords:
crystallizationpolycrystalline thin filmsamorphous thin filmssmall-molecule organic semiconductorsOrganic Electronicsorganic thin film transistorshomogeneous nucleationpatterningclassical nucleation theorynucleation and growth