Stanford Engineering
Dauskardt Group
Postdoc

Jinbao Zhang

Research Interests

Developing low cost organic semiconductors for efficient and stable perovskite solar cells

Organic molecules show great promises as charge transport materials in organic electronics due to their defined structure and structural diversity. Additionally, their optoelectronic properties can be well tuned by modifying the chemical structures. Spiro-OMeTAD is one of the most efficient and widely used hole transport materials (HTMs) for perovskite solar cells (PSCs). However, tedious synthesis (5 steps with <50% yield) and high cost (500 USD/g) of spiro-OMeTAD significantly limit the large-scale application in solar cells. Therefore, developing new alternative molecules with high efficiency and simple synthesis is highly desired. In this project Dr. Zhang and his collaborators fundamentally investigate new molecular structure (e.g. 3D molecular geometry, pendent groups, alkyl chains), and applied them into efficient, stable PSCs.

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Modulating interfaces in perovskite solar cells

Interfaces play important roles in charge transfer, recombination, hysteresis as well as stability of perovskite solar cells. Understanding the charge dynamics and finding effective interfacial passivation method is required to enhance both efficiency and stability of perovskite solar cells. By detailed characterization the interface of perovskite/hole transport materials, we proposed a new recombination mechanism which is associated to the chemical dopants. We also explore new passivation methods to suppress the recombination losses without compromising the charge collection.

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Large scale, low temperature processed perovskite solar cells

New deposition method for large area perovskite thin film is essential for its future scalable application. Our interest is to develop low temperature processed charge transport materials and perovskite on large area substrates. We have developed spray coating and thermal evaporation for the formation of different functional layers.

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Publications

  • W. Scheideler, N. Rolston, O. Zhao, J. Zhang, and R. Dauskardt, Rapid Aqueous Spray Fabrication of Robust NiO: A Simple and Scalable Platform for Efficient Perovskite Solar Cells, Advanced Energy Materials, 2019, just accepted

  • J. Zhang, H. Yan, L. Yang, N. Vlachopoulos, L. Sun, A. Hagfeldt, E. Sheibani, Electrochemically Polymerized Poly (3, 4-phenylenedioxythiophene) as Efficient and Transparent Counter Electrode for Dye Sensitized Solar Cells, Electrochimica Acta, 2019, 300, 482

  • J. Zhang, Q. Daniel, T. Zhang, X. Wen, B. Xu, L. Sun, U. Bach, Y. B. Cheng, “Chemical Dopants Engineering in Hole Transport Layer for Efficient Perovskite Solar Cells: A New Insight into the Interfacial Recombination”, ACS Nano, 2018, 12, 10452

  • J. Zhang, T. Zhang, L. Jiang, U. Bach, Y. Cheng, “4-tert-Butylpyridine Free Hole Transport Materials for Efficient Perovskite Solar Cells: A New Strategy to Enhance the Environmental and Thermal Stability”, ACS Energy Letter, 2018, 3, 1677

  • L. Wang*, J. Zhang*, L. Sun, et al., Synthesis of spiro[dibenzo[c,h]xanthene-7,9' fluorene]- based dopant-free hole-transport materials for perovskite solar cells, 2018, Chem. Comm. 2018, 54, 9571-9574 (Journal Cover)

  • J. Zhang, B. Xu, L. Yang, C. Ruan, Y. Hua, P. Liu, L. Wang, G. Boschloo, L. Kloo, A. Hagfeldt, A. Jen, L. Sun, E. M. J. Johansson,  A. Hagfeldt, The Importance of Pendant Groups on Triphenylamine-based Hole Transport Materials for obtaining Perovskite Solar Cells with over 20% Efficiency, Advanced Energy Materials, 2018, 8, 1701209  (highly cited paper)

  • Jinbao Zhang, Adam Hultqvist, Tian Zhang, Liangcong Jiang, Changqing Ruan, Li Yang, Yibing Cheng, Marika Edoff and Erik M. J. Johansson, Al2O3 Underlayer Prepared by Atomic Layer Deposition for Efficient Perovskite Solar Cells, Chemsuschem, DOI: 10.1002/cssc.201701160

  • Jinbao Zhang, Bo Xu, Li Yang, Changqing Ruan, Yong Hua4, Peng Liu4, Liqin Wang1, Gerrit Boschloo3, Lars Kloo4, Anders Hagfeldt, Alex K.-Y. Jen, Licheng Sun, Erik M. J. Johansson,  Anders Hagfeldt, The Importance of Pendant Groups on Triphenylamine-based Hole Transport Materials for obtaining Perovskite Solar Cells with over 20% Efficiency, Advanced Energy Materials, DOI: 10.1002/aenm.201701209  

  • Jinbao Zhang, Bo Xu, Li Yang, Changqing Ruan, Erik M. J. Johansson, Licheng Sun, Anders Hagfeldt, Incorporation of counter ions in the molecules: New strategy to develop dopant free hole transport material for perovskite solar cells, 2016, Advanced Energy Materials,  DOI: aenm.201602736, 

  • Bo Xu,* Jinbao Zhang,* Yong Hua, Peng Liu, Liqin Wang, Changqing Ruan, Gerrit Boschloo, Erik M. J. Johansson, Lars Kloo, Anders Hagfeldt, Alex K.-Y. Jen, Licheng Sun. Tailor-making of Low-cost Spiro[fluorene-9,9′-xanthene] (SFX)-based 3D Oligomers towards 20.8% Efficiency Perovskite Solar Cells, Chem, 2, 676-687 

  • Bo Xu, Zonglong Zhu, Jinbao Zhang, Hongbin Liu, Chu‐Chen Chueh, Xiaosong Li, Alex K‐Y Jen, 4‐Tert‐butylpyridine Free Organic Hole Transporting Materials for Stable and Efficient Planar Perovskite Solar Cells, Advanced Energy Materials, 2017, 10.1002/aenm.201700683.  

  • Xiaoli Zhang, He Liu, Weigao Wang, Jinbao Zhang, Bing Xu, Yuanjin Zheng, Sheng Liu, Shuming Chen, Kai Wang, Xiaowei Sun, High luminance of hybrid perovskite light-emitting diodes: perovskite nanocrystals with organic-inorganic mixed cations, 2016, Advanced Materials, 2016, 29, 1606405

  • Jinbao Zhang, Yong Hua, Peng Liu, Li Yang, Xu Bo, Malin B. Johansson, Nick Vlachopoulos,  Gerrit Boschloo, Erik M. J. Johansson, Licheng Sun, and Anders Hagfeldt. The Role of 3D Molecular Structural Control in New Hole Transport Materials Outperforming Spiro -OMeTAD in Perovskite Solar Cells, Advanced Energy Materials, 2016, 1601062 

  • Jinbao Zhang, Bo Xu, Nick Vlachopoulos, Gerrit Boschloo, Licheng Sun, Anders Hagfeldt, A strategy to boost the efficiency for mixed-ion perovskite solar cells: Changing geometry of hole transporting materials. ACS Nano, 2016, 10, 6816–6825

  • Jinbao Zhang, Bo Xu, Mahboobeh Hadadian, Malin Johansson, Erik M. Johansson, Nick Vlachopoulos, Gerrit Boschloo, Licheng Sun, Anders Hagfeldt, Constructive Effects of Alkyl Chains: A Strategy to Design Simple and Non-Spiro Hole Transporting Materials for High-efficiency Mixed-Ion Perovskite Solar Cells. Advanced Energy Material 2016, 1502536

  • Yong Hua,‖ Jinbao Zhang,‖ Bo Xu, Peng Liu, Ming Cheng, Lars Kloo, Erik M. J. Johansson , Gerrit Boschloo, Licheng Sun, Facile Synthesis of Hole Transport Materials for Highly Efficient Perovskite Solar Cells and Solid-State Dye-sensitized Solar Cell, Nano Energy, 2016, 26, 108-113

  • Jinbao Zhang, Nick Vlachopoulos, Mohamed Jouini, Malin B. Johansson, Xiaoliang Zhang, Mohammad khaja Nazeeruddin, Gerrit Boschloo, Erik M. J. Johansson, Anders Hagfeldt, Efficient solid-state dye sensitized solar cells: the influence of dye molecular structures for the in-situ photoelectrochemically polymerized PEDOT as hole transporting material, Nano Energy, 2015, DOI: 10.1016/j.nanoen.2015.09.010

  • Jinbao Zhang, Nick Vlachopoulos, Yan Hao, Gerrit Boschloo,  Erik M. J. Johansson, Michael Graetzel and Anders Hagfeldt, Blue-Coloured Solid-State Dye Sensitized Solar Cells: Enhanced Charge Collection By Using Photo-electrochemically Generated Conducting Polymer Hole Conductor, ChemPhysChem, DOI: 10.1002/cphc.201600064

  • Lei Yang,‖ Jinbao Zhang,‖ Yang Shen, Byung-wook Park, Dongqin Bi, Leif Häggman, Erik M. J. Johansson, Gerrit Boschloo, Anders Hagfeldt, Nick Vlachopoulos, Alan Snedden, Lars Kloo, Adel Jarboui, Amani Chams, Christian Perruchot, and Mohamed Jouini, New approach for preparation of efficient solid state dye sensitized solar cells by photo-electrochemical polymerization in aqueous solution, Journal of Physical Chemistry Letter, 2014, 4 (23), 4026–4031. 

  • Jinbao Zhang, Lei Yang, Yang Shen, Byung-Wook Park, Yan Hao, Erik M. J. Johansson,Gerrit Boschloo, Lars Kloo, Erik Gabrielsson,Licheng Sun, Adel Jarboui, Christian Perruchot, Mohamed Jouini, Nick Vlachopoulos, and Anders Hagfeldt,  Poly(3,4-ethylenedioxythiophene) Hole-Transporting Material Generated by Photoelectrochemical Polymerization in Aqueous and Organic Medium for All-Solid-State Dye-Sensitized Solar Cells, Journal of Physical Chemistry C, 2014, 118 (30), 16591–16601

  • Jinbao Zhang, Leif Hggman, Mohamed Jouini, Adel Jarboui, Gerrit Boschloo, Nick Vlachopoulos, and Anders Hagfeldt, Solid-State Dye-Sensitized Solar Cells Based on Poly (3,4-ethylenedioxypyrrole) and Metal-Free Organic Dyes, ChemPhysChem, 2014, 15, 1043 – 1047 

  • Jinbao Zhang, Adel Jarboui, Nick Vlachopoulos, Mohamed Jouini, Gerrit Boschloo, Anders Hagfeldt, Photoelectrochemical Polymerization of EDOT for Solid State Dye Sensitized Solar Cells: Role of Dye and Solvent, Electrochimica Acta, DOI:10.1016/j.electacta.2015.01.077

  • Jinbao Zhang, Hanna Ellis, Erik Johansson, Gerrit Boschloo, Nick Vlachopoulos, Anders Hagfeldt, Jonas Bergquist, and Denys Shevchenko. Matrix-Assisted Laser Desorption/Ionization Mass Spectrometric Analysis of Poly(3,4-ethylenedioxythiophene) in Solid-State Dye-Sensitized Solar Cells: Comparison of in-situ Photoelectrochemical Polymerization in Micellar and Organic Media, Analytical Chemistry, 2015, DOI:10.1021/ac504851f

  • Jinbao Zhang, Justus Simiyu, Meysam Pazoki, Malin Johansson, Ocean Cheung, Leif Häggman,Nick Vlachopoulos and Gerrit Boschloo, The effect of mesoporous particle size on the performance of solid state dye sensitized solar cells based on photoelectrochemically polymerized PEDOT as hole conductor. Electrochimica Acta, 2016, 210, 21-30

  • Marina Freitag, Quentin Daniel, Meysam Pazoki, Kari Sveinbjornsson, Jinbao Zhang, Licheng Sun,  Anders Hagfeldt, Gerrit Boschloo, Energy Environmental Science, 2015, DOI:10.1039/C5EE01204J

  • Kári Sveinbjörnsson, Kerttu Aitola, Jinbao Zhang, Malin B. Johansson, Xiaoliang Zhang, Juan-Pablo Correa-Baena, Anders Hagfeldt, Gerrit Boschloo, and Erik M. J. Johansson, Ambient air processed mixed-ion perovskite for high efficiency solar cells, 2016, Journal of Material Chemistry A, DOI: 10.1039/C6TA06912F

  • Bo Xu, Haining Tian, Lili Lin, Deping Qian, Hong Chen, Jinbao Zhang, Nick Vlachopoulos, Gerrit Boschloo, Yi Luo, Fengling Zhang, Anders Hagfeldt, Licheng Sun.  Integrated Design of Organic Hole Transport Materials for Efficient Solid-State Dye-Sensitized Solar Cells. Advanced Energy Materials, 2014, DOI: 10.1002/aenm.201401185. 

  • Bo Xu, Esmaeil Sheibani, Peng Liu, Jinbao Zhang, Haining Tian, Nick Vlachopoulos, Gerrit Boschloo, Lars Kloo, Anders Hagfeldt and Licheng Sun, Carbazole-Based Hole-Transport Materials for Efficient Solid-State Dye-Sensitized Solar Cells and Perovskite Solar Cells, Advanced Material, 2014, DOI: 10.1002/adma.201402415

  • Xiaoli Zhang,  Bing Xu,  Jinbao Zhang,  Yuan Gao,  Yuanjin Zheng, Kai Wang,  Xiao Wei Sun, All-Inorganic Perovskite Nanocrystals for High-Efficiency Light Emitting Diodes: Dual-Phase CsPbBr3-CsPb2Br5 Composites, 2016, Advance Functional Materials, DOI: 10.1002/adfm.201600958

  • Valentina Leandri, Jinbao Zhang, Edgar Mijangos, Gerrit Boschloo, Sascha Ott, Highly efficient organic dye with fluorine substituent for solid-state Dye-Sensitized Solar Cells. 2016, Journal of Photochemistry and Photobiology A: Chemistry, doi:10.1016/j.jphotochem. 2016.05.015

  • Kerttu Aitola, Jinbao Zhang, Nick Vlachopoulos, Janne Halme, Antti Kaskela, Albert G. Nasibulin, Esko I. Kauppinen, Gerrit Boschloo, Anders Hagfeldt, Carbon nanotube film replacing silver in high-efficiency solid-state dye solar cells employing polymer hole conductor, Journal of solid-state electrochemistry, 2015, DOI:10.1007/s10008-015-2937-

  • Nick Vlachopoulos, Jinbao Zhang, Anders Hagfeldt, Dye-sensitized Solar Cells: New Approaches with Organic Solid-state Hole Conductors, CHIMIA International Journal for Chemistry, 2015, DOI:10.2533/chimia 

  • Xiaoli Zhang, Jinbao Zhang, Kai Wang, Codoping induced rhombus-shaped Co3O4 nanosheets as active electrode material for oxygen evolution, ACS Applied Materials & Interfaces, 2015, DOI: 10.1021/acsami.5b05149

  • Peng Liu, Bo Xu, Martin Karlsson, Jinbao Zhang, Nick Vlachopoulos, Gerrit Boschloo, Licheng Sun, Lars Kloo. The combination of a new organic D-π-A dye with different organic hole-transport materials for efficient solid state dye-sensitized solar cells, J. Mater. Chem. A 2014; DOI: 10.1039/C4TA05774K

  • Annette Felices, Jinbao Zhang, Marie-Pierre Santoni, ChangZi Dong, Christian Perruchot, Anders Hagfeldt, Mohamed Jouini, New Covalently Linked Dye-Hole Transport Material for better charge transfer in Solid-State Dye Sensitized Solar Cells, (submitted to Electrochemica Communication) 

  • Peng Liu, Bo Xu, Yong Hua, Ming Cheng, Kerttu Aitola, Kári Sveinbjörnsson, Jinbao Zhang, Gerrit Boschloo, Licheng Sun, Lars Kloo, Design, synthesis and application of π-conjugated, non-spiro molecular alternatives as hole-transport materials for highly efficient dye-sensitized solar cells and perovskite solar cells, Journal of power sources, 2017, 344, 11

  • Yan Hao, Yasemin Saygili, Jiayan Cong, Anna Eriksson, Wenxing Yang, Jinbao Zhang, Kazuteru Nonomura, Lars Kloo, Anders Hagfeldt, and Gerrit Boschloo, A Novel Blue Colored Organic Dye for Dye-Sensitized Solar Cells Achieving High Efficiency in Cobalt-based Electrolytes and by Co-sensitization.  ACS Applied Material & Interface, 2016, 8, 32797

  • Xuesong Fang, Jing Li, Kelong Huang, Suqin Liu, Chenghuan Huang, Shuxin Zhuang, Jinbao Zhang, Synthesis and electrochemical properties of K-doped LiFePO4/C composite as cathode material for lithium-ion batteries, Journal of Solid State Electrochemistry, (2012) 16:767

  • Zhuang Shuxin, Liu Suqin, Zhang Jinbao, Tu Feiyue, Huang Hongxia, Huang Kelong, Li Yanhua, Application of Nanoporous Perovskite La1-xCaxCoO3 in an Al-H2O2 Semi Fuel Cell, Acta Phys. Chim. Sin.2012, 28(2), 355-360

  • Fangfei Liu, Suqin Liu, Qiuju Feng, Shuxin Zhuang, Jinbao Zhang, Peng Bu, Electrochemical Synthesis of Dimethyl Carbonate with Carbon Dioxide in 1-Butyl-3-Methylimidazoliumtetrafluoborate on Indium Electrode, Int. J. Electrochem. Sci., 7 (2012) 4381 – 4387

  • Shuxin Zhuang, Suqin Liu, Chenghuan Huang, Feiyue Tu, Jinbao Zhang, Yanhua Li, Electrocatalytic Activity of Nanoporous Perovskite La1-xCaxCoO3 Towards Hydrogen Peroxide Reduction in Alkaline Medium, Int. J. Electrochem. Sci., 7 (2012) 338 – 344

  • Yougen Tang, Chenxi Jiang, Yazhi Wang, Xiaopei Gao, Jinbao Zhang, Effect of rapid quenching in magnetic field on the microstructures and electrochemical performances of AB5-type alloys, Advanced Materials Research, 512-515 (2012), 1589-1596

Conference Proceedings and Presentations

  • 1st Annual Exciton Science Workshop and Centre Launch, Melbourne, Australia, 2017.

  • 5th ACAP (Australian Centre for Advanced Photovoltaics) conference, Melbourne, Australia, 2017.

  • APVI Asia-Pacific Solar Research Conference, melbourne, Australia, 2017.

  • International Symposium on Energy Conversion and Storage Materials, Brisbane, 2017.

  • 6th MC Meeting, 5th WG Meeting and “Organic & Perovskite Solar Cells Conference” Conference, Crete, Greece, 2016.

  • International Society of Electrochemistry 67, (ISE 67), Hague, Netherland, 2016.

  • 251th ACS National Meeting & Exposition, San Diego, California, US, 2016.

  • International Society of Electrochemistry 66, (ISE 66), Taibei, Taiwan, 2015.

  • European Network on Smart Inorganic Polymers, Uppsala, Sweden, 2015.

  • Workshop on the Electrochemistry of Electroactive Materials 2015, (WEEM), Bad Herrenalb, Germany, 2015.

  • International Conference on Hybrid and Organic Photovoltaics, (HOPV 15), Rome, Italy, 2015.

  • International Society of Electrochemistry 65, Lausanne, Switzerland, 2015.

  • Summer school on “Organic photovoltaic, from molecules to solar cells”, Białystok, Poland, 2014.

  • International Conference on Hybrid and Organic Photovoltaics, (HOPV14), EPFL, Lausanne, Switzerland, 2014.

  • International Conference on Hybrid and Organic Photovoltaics (HOPV13), Seville, Spain, 2013.

Education

Postdoctoral Research Fellow, Dauskardt Group, Stanford University
Postdoctoral Researcher, Monash University, Australia , 2018
PhD, Uppsala University, Sweden, 2016
MS, Central South University, China, 2012
BS, Central South University, China, 2010