Field Effect versus Driving Force: Charge Generation in Small‐Molecule Organic Solar Cells

V. C. Nikolis, Y. Dong, J. Kublitski, J. Benduhn, X. Zheng, C. Huang, A. C. Yuzer, M. Ince, . Spoltore, J. R. Durrant, A. A. Bakulin and K. Vandewal
Adv. Energy Mater., 10, 2002124 (2020)

Lanthanide-Doped Inorganic Nanoparticles Turn Molecular Triplet Excitons Bright
Han S., Deng R., Gu Q., Ni L., Huynh U., Zhang Z., Yi Z., Zhao B., Tamura H., Pershin A., Xu H., Huang Z., Ahmad S., Abdi-Jalebi M., Sadhanala A., Tang M. L., Bakulin A. A., Beljonne D., Liu X. and Rao A.
Nature, 587, 594-599 (2020)

Nonfullerene-Based Organic Photodetectors for Ultrahigh Sensitivity Visible Light Detection
Bristow H., Jacoutot P., Scaccabrozzi A. D., Babics M., Moser M., Wadsworth A., Anthopoulos T. D., Bakulin A. A., McCulloch I. and Gasparini N.
ACS Applied Materials & Interfaces, 12, 48836-48844 (2020)

Orientation Dependent Molecular Electrostatics Drives Efficient Charge Generation in Homojunction Organic Solar Cells
Dong Y., Nikolis V. C., Talnack F., Chin Y., Benduhn J., Londi G., Kublitski J., Zheng X., Mannsfeld S. C. B., Spoltore D., Muccioli L., Li J., Blase X., Beljonne D., Kim J., Bakulin A. A., D'Avino G., Durrant J. R. and Vandewal K.
Nature Communications, 11, 4617 (2020)

Hot Carrier Dynamics in Perovskite Nanocrystal Solids: Role of the Cold Carriers, Nanoconfinement, and the Surface
Hopper T. R., Gorodetsky A., Jeong A., Krieg F., Bodnarchuk M. I., Maimaris M., Chaplain M., Macdonald T. J., Huang X., Lovrincic R., Kovalenko M. V. and Bakulin A. A.
Nano Lett., 20, 2271-2278 (2020)

Exciton and Charge Carrier Dynamics in Highly Crystalline PTQ10:IDIC Organic Solar Cells
Cha H., Zheng Y., Dong Y., Hwi Lee H., Bristow H., Zhang J., Ka Hin Lee H., Tsoi W. C., Bakulin A. A., McCulloch I. and Durrant J. R.
Adv. Energy Mater., 10, 2001149 (2020)

Kinetic Modelling of Intraband Carrier Relaxation in Bulk and Nanocrystalline Lead-Halide Perovskites
Hopper T. R., Jeong A., Gorodetsky A. A., Krieg F., Bodnarchuk M. I., Huang X., Lovrincic R., Kovalenko M. V. and Bakulin A. A.
Phys. Chem. Chem. Phys., 22, 17605-17611 (2020)

Influence of Polymer Aggregation and Liquid Immiscibility on Morphology Tuning by Varying Composition in PffBT4T-2DT/Nonfullerene Organic Solar Cells
Hamid Z., Wadsworth A., Rezasoltani E., Holliday S., Azzouzi M., Neophytou M., Guilbert A. A. Y., Dong Y., Little M. S., DeLongchamp D. M., Bakulin A. A., Durrant J. R., Nelson J. and McCulloch I.
Adv. Energy Mater.,  10,1903248 (2020)

Defects Healing in Two-Step Deposited Perovskite Solar Cells via Formamidinium Iodide Compensation
Xin C., Zhang J., Zhou X., Ma L., Hou F., Shi B., Pan S-J, Chen B., Wang P., Zhang D., Chen X., Zhao Y., Bakulin A. A., Li Y. and Zhang X.
Appl. Energy Mater. 3, 3318-3327 (2020)

Energy Transfer to a Stable Donor Suppresses Degradation in Organic Solar Cells
Weu A., Kumar R., Butscher J. F., Lami V., Paulus F., Bakulin A. A. and Yaynzof Y.
Adv. Func. Mat., 1907432 (2019)

Impact of Oxygen Vacancy Occupancy on Charge Carrier Dynamics in BiVO4 Photoanodes
Selim S., Pastor E., Garcia-Tecedor M., Morris M. R., Francas L., Sachs M., Moss B., Corby S., Meso C. A., Gimenez S., Kafizas A., Bakulin A. A. and Durrant J. R.
J. Am. Chem. Soc., 141, 18791 - 18798 (2019)

Sequentially Deposited versus Conventional Non-fullerene Organic Solar Cells: Interfacial Trap States, Vertical Stratification and Exciton Dissociation
Zhang J., Futsher M., Lami V., Kosasih F., Cho C., Gu Q., Sadhanala A., Pearson A., Kan B., Divitini G., Wan X., Credgington D., Greenham N., Chen Y., Ducati C., Ehrler B., Vaynzof Y., Friend R. and Bakulin A. A.
Adv. Energy Mater., 1902145 (2019)

Hot-Carrier Cooling in Lead-Bromide Perovskite Materials
Hopper T.R., Gorodetsky A.A., Krieg F., Bodnarchuk M.I., Huang X., Lovrincic R., Kovalenko M.V. and Bakulin A.A.
Proc. Phys. Chem. Semiconductor Mater. and Interfaces XVIII, 11084, 110840-F (2019)

In-situ Observation of Picosecond Polaron Self-Localisation in α-Fe2O3 Photoelectrochemical Cells
Pastor E., Park J., Steier L., Kim S., Gratzel M., Durrant J.R., Walsh A. and Bakulin A.A.
Nat. Commun, 10, 3962 (2019)

Charge Separation, Band Bending and Recombination in WO3 Photoanodes
Corby S., Pastor E., Dong Y., Zheng X., Francas L., Sachs M., Selim S., Kafizas A., Bakulin A.A. and Durrant J.R.
J. Phys. Chem. Lett, 10, 5396 (2019)

Impact of Marginal Exciton-Charge-Transfer State Offset on Charge Generation and Recombination in Polymer:Fullerene Solar Cells
Vezie M.S., Azzouzi M., Telford A.M., Hopper T.R., Sieval A.B., Hummelen K.F., Bronstein H., Kirchartz T., Bakulin A.A., Clarke T.M. and Nelson J.
ACS Energy Lett., 4, 2096 (2019)

Control of Donor-Acceptor Photophysics through Structural Modification of a "Twisting" Push-Pull Molecule
Hopper T.R., Qian D., Yang L., Wang X., Zhou K., Kumar R., Ma W., He C., Hou J., Gao F. and Bakulin A.A., 
Chem. Mater., 31, 6860 (2019)

The Binding Energy and Dynamics of Charge-Transfer States in Organic Photovoltaics with Low Driving Force for Charge Separation
Dong Y., Cha H., Zhang J., Pastor E., Shakya Tuladhar P., McCulloch I., Durrant J.R. and Bakulin A.A.
ACS Appl. Mater. Interfaces, 11, 1143 (2019)

Oxygen-Induced Doping as a Degradation Mechanism in Highly Efficient Organic Solar Cells
Weu A., Kress J.A., Paulus F., Becker-Koch D., Lami V., Bakulin A.A. and Vaynzof Y.
ACS Appl. Energy Mater., 2, 1943 (2019)

Efficient and Tunable Electroluminescence from In Situ Synthesized Perovskite Quantum Dots
Yu H., Wang H., Zhang J., Yuan Z., Xu W., Hultman L., Bakulin A.A., Friend R.H., Wang J., Liu X. and Gao F.
Small, 15, 1804947 (2019)

Probing Charge Transfer States at Organic and Hybrid Internal Interfaces by Photothermal Deflection Spectroscopy
Becker-Koch D., Rivkin B., Paulus F., Xiang H., Dong Y., Chen Z., Bakulin A.A. and Vaynzof Y.
J. Phys.: Condens. Matter, 31, 124001 (2019)

Block Junction-Functionalised All-Conjugated Donor-Acceptor Block Copolymers
Nübling F., Hopper T.R., Kuei B., Komber H., Untilova V., Schmidt S.B., Brinkmann M., Gomez E.D., Bakulin A.A. and Sommer M.
ACS Appl. Mater. Interfaces, 11, 1143 (2019)

Rotational Cation Dynamics in Metal Halide Perovskites: Effect on Phonons and Material Properties
Gallop N.P., Selig O., Giubertoni G., Bakker H.J., Rezus Y.L.A., Frost J.M., Jansen T.L.C., Lovrincic R. and Bakulin A.A.,
J. Phys. Chem. Lett., 9, 5987 (2018)

Ultrafast Intraband Spectroscopy of Hot-Carrier Cooling in Lead-Halide Perovskites
Hopper T.R., Gorodetsky A., Frost J.M., Müller C., Lovrincic R. and Bakulin A.A.,
ACS Energy Lett., 3, 2199 (2018)

Efficient Non-Fullerene Organic Solar Cells Employing Sequentially Deposited Donor-Acceptor Layers
Zhang J., Kan B., Pearson A.J., Parnell A.J., Cooper J.F.K., Liu X., Conaghan P.J., Hopper T.R., Wu Y., Wan X., Gao F., Greenham N.C., Bakulin A.A., Chen Y. and Friend R.,
J. Mater. Chem. A, 6, 18225 (2018)

Design Rules for Minimizing Voltage Losses in High-Efficiency Organic Solar Cells
Qian D., Zheng Z., Yao H., Tress W., Hopper T.R., Chen S., Li S., Lui J., Chen S., Zhang J., Liu X., Gao B., Ouyang L., Jin Y., Pozina G., Buyanova I.A., Chen W.M., Inganäs O., Coropceanu V., Bredas J., Yan H., Hou J., Zhang F., Bakulin A.A. and Gao F.,
Nat. Mater., 17, 703 (2018)

Triptycenyl-Phenazino-Thiadiazole as Acceptor in Organic Bulk-Heterojuction Solar Cells
Leibold D., Lami V., Hofsteffer Y.J., Becker-Koch D., Weu A., Biegger P., Paulus F., Bunz U.H.F., Hopkinson P.E., Bakulin A.A. and Vaynzof Y.,
Org. Elec., 57, 285 (2018)

Field-Assisted Exciton Dissociation in Highly Efficient PffBT4T-2OD:Fullerene Organic Solar Cells
Weu A., Hopper T.R., Lami V., Kreß J.A., Bakulin A.A. and Vaynzof Y.,
Chem. Mater., 30, 2660 (2018)

The Effect of Ionic Compositon on Acoustic Phonon Speeds in Hybrid Perovskites from Brillouin Spectroscopy and Density Functional Theory
Kabakova I.V., Azuri I., Zhouying C., Nayak P.K., Snaith H.J., Kronik L., Paterson C., Bakulin A.A. and Egger D.A.,
J. Mater. Chem. C., 6, 3861 (2018)

Control of Geminate Recombination by the Material Composition and Processing Conditions in Novel Polymer:Nonfullerene Acceptor Photovoltaic Devices
Zhang. J, Gu Q., Do T.T., Rundel K., Sonar P., Friend R.H., McNeill C.R. and Bakulin A.A., 
J. Phys. Chem. A., 122, 1253 (2018)

Organic Cation Rotation and Immobilisation in Pure and Mixed Methylammonium Lead-Halide Perovskites 
Selig O., Sadhanala A., Müller C., Lovrincic R., Chen Z., Rezus Y.L., Frost J.M., Jansen T.L., and Bakulin A.A.,
JACS, 139, 4068 (2017)

Fine-Tuning the Energy Levels of a Nonfullerene Small-Molecule Acceptor to Achieve a High Short-Circuit Current and a Power Conversion Efficiency over 12% in Organic Solar Cells 
Kan. B., Zhang J., Liu F., Wan X., Li C., Ke X., Wang Y., Feng H., Zhang Y., Long G., Friend R.H., Bakulin A.A., Chen Y., 
Advanced Materials, 1704904 (2017)

On the Energetics of Bound Charge-Transfer States in Organic Photovoltaics
Zhang J., Jakowetz A., Li G., Di D., Menke S.M., Rao A., Friend R.H. and Bakulin A.A.,
J. Mat. Chem. A. 5, 11949 (2017)

N‐Heteroacenes as a New Class of Non‐Fullerene Electron Acceptors for Organic Bulk‐Heterojunction Photovoltaic Devices
Lami V., Leibold D., Fassl P., Hofstetter Y.J., Becker‐Koch D., Biegger P., Paulus F., Hopkinson P.E., Adams M., Bunz U.H.F., Huettner S., Howard I., Bakulin A.A., Vaynzof Y., 
Solar RRL 1, 1700053 (2017)

Real-Time Observation of Multiexcitonic States in Ultrafast Singlet Fission Using Coherent 2D Electronic Spectroscopy
Bakulin A.A, Morgan S.E., Kehoe T.B., Wilson M.B., Chin A., Zigmantas D., Egorova D., Rao A.,
Nature Chemistry 8, 16 (2016)

Ultrafast Spectroscopy with Photocurrent Detection: Watching Excitonic Optoelectronic Systems at Work
Bakulin A.A., Silva C., Vella E.,
J. Phys. Chem. Lett. 7, 250 (2016)

What Controls the Rate of Ultrafast Charge Transfer and Charge Separation Efficiency in Organic Photovoltaic Blends
Jakowetz A.C., Böhm M.L., Zhang J., Sadhanala A., Huettner S., Bakulin A.A., Rao A., Friend R.H., 
JACS 138, 11672 (2016)

Simultaneous enhancement in open circuit voltage and short circuit current of hybrid organic–inorganic photovoltaics by inorganic interfacial modification
Hofstetter Y.J., Hopkinson P., Bakulin A.A., Vaynzof Y.,
J. Mater. Chem. C. 4, 1111 (2016)

Improving Charge Separation across a Hybrid Oxide/Polymer Interface by Cs Doping of the Metal Oxide
Sevinchan Y., Hopkinson P.E., Bakulin A.A., Herz J., Motzkus M., Vaynzof Y.,
Adv. Mater. Interfaces, 1500616 (2016)

Morphology, Temperature, and Field Dependence of Charge Separation in High-Efficiency Solar Cells Based on Alternating Polyquinoxaline Copolymer
Bakulin A.A., Xia Y., Bakker H.J., Inganäs O., Gao F.,
J. Phys. Chem. C. 120, 4219 (2016)

Real-Time Observation of Organic Cation Reorientation in Methylammonium Lead Iodide Perovskites
Bakulin A.A., Selig O., Bakker H.J., Rezus Y.L.A., Müller C., Glaser T., Lovrincic L., Sun Z., Chen Z., Walsh A., Frost J.M., Jansen T.L.C.,
J Phys. Chem. Lett. 6, 3663 (2015)

Dynamics of Intraband and Interband Auger Processes in Colloidal Core–Shell Quantum Dots
Rabouw F.T., Vaxenburg R., Bakulin A.A., van Dijk-Moes R.J.A., Bakker H.J., Rodina A., Lifshitz E., Efros A.L., Koenderink A.F., Vanmaekelbergh D.,
ACS Nano 9, 10366 (2015)

Water Infiltration in Methylammonium Lead Iodide Perovskite: Fast and Inconspicuous
Müller C., Glaser T., Plogmeyer M., Sendner M., Döring S., Bakulin A.A., Brzuska C., Scheer R., Pshenichnikov M.S., Kowalsky W., Pucci A., Lovrinčić R.,
Chem. Mater. 27, 7835 (2015)

Lead Telluride Quantum Dot Solar Cells Displaying External Quantum Efficiencies Exceeding 120%
Böhm M.L., Jellicoe T.C., Tabachnyk M., Davis N.J.L.K., Wisnivesky-Rocca-Rivarola F., Ducati K., Ehrler B., Bakulin A.A., Greenham N.C.,
Nano Lett. 15, 7987 (2015)

Mode-selective vibrational modulation of charge transport in organic electronic devices
Bakulin A.A., Lovrincic R., Yu X., Selig O., Bakker H.J., Rezus Y.L.A., Nayak P.K., Fonari A., Coropceanu V., Brédas J.-L., Cahen D.,
Nature Communications,  6:7880 (2015)

Reduced Carrier Recombination in PbS-CuInS2 Quantum Dot Solar Cells
Sun Z., Stibon G., Pons T., Bakulin A.A., Chen Z.,
Scientific Reports 5, 10626 (2015)

Unequal Partnership: Asymmetric Roles of Polymeric Donor and Fullerene Acceptor in Generating Free Charge
Savoie B.M., Rao A., Bakulin A.A., Gelinas S., Movaghar B., Friend R.H., Marks T.J., Ratner M.A.,
JACS 136, 2876 (2014)

Control of charge generation and recombination in ternary polymer/polymer: fullerene photovoltaic blends using amorphous and semi-crystalline copolymers as donors
Mangold H., Bakulin A.A., Howard I.A., Kästner C., Egbe D.A.M., Hoppe H., 
Phys. Chem. Chem. Phys. 16, 20329 (2014)

Improved Performance of ZnO/Polymer Hybrid Photovoltaic Devices by Combining Metal Oxide Doping and Interfacial Modification
Pachoumi O., Bakulin A.A., Sadhanala A., Sirringhaus H., Friend R.H., and Vaynzof Y.,
J. Phys. Chem. C. 118, 18945 (2014)

Charge Trapping Dynamics in PbS Colloidal Quantum Dot Photovoltaic Devices
Bakulin A.A., Neutzner S., Bakker H.J., Ottaviani L., Barakel D., Chen Z.,
ACS Nano 7, 8771 (2013)

Dynamics of Water Confined in Reversed Micelles: Multidimensional Vibrational Spectroscopy Study
Bakulin A.A., Cringus D., Pieniazek P.A., Skinner J.L., Jansen T.L.C., Pshenichnikov M.S.,
J. Phys. Chem. B. 117, 15545 (2013)

Suppressing Recombination in Polymer Photovoltaic Devices via Energy Cascades
Tan Z.-K., Johnson K., Vaynzof Y., Bakulin A.A., Chua L.-L., Ho P.K.H., Friend R.H.,
Adv. Mater. 25, 4131 (2013)

Charge-Transfer State Dynamics Following Hole and Electron Transfer in Organic Photovoltaic Devices
Bakulin A.A., Dimitrov S.D., Rao A., Chow P.C.Y., Nielsen C.B., Schroeder B.C., McCulloch I., Bakker H.J., Durrant J.R., Friend R.H.,
J. Phys. Chem. Lett. 4, 209(2013)

Donor–Acceptor Interface Modification by Zwitterionic Conjugated Polyelectrolytes in Polymer Photovoltaics
Kumar A., Pace G., Bakulin A.A.,  Fang J., Ho P.K.H., Huck W.T.S., Friend R.H., Greenham N.C.,
Energy Environ. Sci. 6, 1589 (2013)

On the Energetic Dependence of Charge Separation in Polymer/Fullerene Blends
Dimitrov S.D., Bakulin A.A., Nielsen C.B., Schroeder B.C., Du J., Bronstein H., McCulloch I., Friend R.H., Durrant J.R.,
J. Am. Chem. Soc. 134, 18189 (2012)

Direct Observation of Photoinduced Charge-Transfer States at Organic-Inorganic Interface
Vaynzof Y.,* Bakulin A. A.,* Gelinas S., Friend R. H., (*-equal cont.)
Phys. Rev. Lett. 108, 246605 (2012) 

The Role of Driving Energy and Delocalised States for Charge Separation in Organic Semiconductors
Bakulin A. A., Rao A., Paveleyev V., van Loosdrecht P. H. M., Pshenichnikov M. S., Niedzialek D., Cornil J., Beljonne D., Friend R. H.,
Science 335, 1340 (2012)

Reduced Intermolecular Coupling and Rotational Mobility of Water at the Lipid-like Interface
Bakulin, A.A., Pshenichnikov M.S.,
Phys.Chem.Chem.Phys., 13, 19355  (2011)

Hydrophobic Molecules Slow Down the Hydrogen-Bond Dynamics of Water
Bakulin, A.A., Bakker, H.J., Petersen, C., Pshenichnikov, M.S.,
J. Phys. Chem. A, 115, 1821 (2011)

Femtosecond Mid-Infrared Study of Aggregation Behaviour in Alcohol Solutions
Petersen, C., Bakulin, A.A., Paveleyev V., Pshenichnikov, M.S., Bakker, H.J.,
J. Chem. Phys., 133, 164514 (2010)

Hole-Transfer Dynamics in MDMO-PPV/PCBM Bulk Heterojunction
Bakulin, A. A., Hummelen, J. C., Pshenichnikov, M. S., van Loosdrecht, P. H. M. 
Adv. Funct. Mater., 20, 1653 (2010)

Charge Transfer Complexes of Conjugated Polymers as Intermediates for Organic Photovoltaics
Bakulin, A. A., Martianov, D. S., Pshenichnikov, M. S., van Loosdrecht, P. H. M., Paraschuk, D. Y. 
Chem. Phys. Lett., 482, 99 (2009)

The Hydrophobic Hydration: a 2D IR Spectroscopy Inquest
Bakulin, A. A., Liang, C., Jansen, T. l. C., Wiersma, D. A., Bakker, H. J., Pshenichnikov, M. S.
Acc.of Chem. Res., 42, 1229 (2009)

Efficient Two-Step Photogeneration of Long-Lived Charges in Ground-State Charge-Transfer Complexes of MEH-PPV Doped with Fullerene
Bakulin, A. A., Zapunidy, S. A., Pshenichnikov, M. S., van Loosdrecht, P. H. M., Paraschuk, D. Y.
Phys.Chem.Chem.Phys., 11, 7324 (2009)

Photogeneration and Ultrafast Dynamics of Excitons and Charges in P3HT/PCBM Blends
Piris, J., Dykstra, T. E., Bakulin, A. A., van Loosdrecht, P. H. M., Knulst, W., Trinh M.T.,  Schins, J.M., Siebbeles, L.D.A.,
J. Phys. Chem. C  113, 14500 (2009)

Ultrafast polarization spectroscopy of photoinduced charges in a conjugated polymer
Bakulin, A. A., Paraschuk, D. Y. van Loosdrecht, P. H. M., Pshenichnikov, M. S., 
Quantum Electronics  39, 643 (2009)

Ultrafast charge photogeneration dynamics in ground-state charge-transfer complexes based on conjugated polymers
Bakulin, A. A., Martyanov, D. S., Paraschuk, D. Y., Pshenichnikov, M. S. & van Loosdrecht, P. H. M., 
J. Phys. Chem. B 112, 13730 (2008)

Dramatic enhancement of photooxidation stability of a conjugated polymer in blends with organic acceptor
Golovnin, I.V., Bakulin, A. A., Zapunidy, S. A., Nechvolodova, E. M. & Paraschuk, D. Y.
Appl. Phys. Lett. 92, 243311 (2008).

Ultrafast energy transfer in water-AOT reverse micelles
Cringus, D., Bakulin, A., Lindner, J., Vohringer, P., Pshenichnikov, M. S. & Wiersma, D. A. 
J. Phys. Chem. B 111, 14193 (2007).

Influence of preparation procedure on optical properties of conjugated-polymer thin films
Arnautov, S. A., Nechvolodova, E. M., Bakulin, A. A., Elizarov, S. G., Khodarev, A. N., Martyanov, D. S. & Parashchuk, D. Y. 
Polymer Science Series A 47, 711 (2005)

Weak charge-transfer complexes based on conjugated polymers for plastic solar cells
Bakulin, A.A., Elizarov, S.G., Khodarev, A., Martyanov, D.S., Golovnin, I., Paraschuk, D.Y., Triebel, M.M., Tolstov, I., Frankevich, E.L., Arnautov, S.A., Nechvolodova, E.M.
Synthetic Metals 147, 221 (2004)

Charge transfer complexes of a conjugated polymer
Bakulin, A. A., Khodarev, A. N., Martyanov, D. S., Elizarov, S. G., Golovnin, I. V., Paraschuk, D. Y., Arnautov, S. A. & Nechvolodova, E. M.
Doklady Chemistry 398, 204 (2004)

Properties of MEH-PPV films prepared by slow solvent evaporation
Amautov, S. A., Nechvolodova, E. M., Bakulin, A. A., Elizarov, S. G., Khodarev, A., Martyanov, D. S. & Paraschuk, D. Y.
Synthetic Metals 147, 287 (2004)