Laboratory of Organic and Nanostructured Optoelectronics

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Selected Publications (Click here for the full list of publications).


  1. J. Mai, H. Lu, T. -K. Lau, S. -H. Peng, C. -S. Hsu, W. Hua, N. Zhao, X. Xiao, and X. Lu*, High efficiency ternary organic solar cell with morphology-compatible polymers. J. Mater. Chem. A (2017) link


  1. Feng Wang, Wei Geng, Yang Zhou, Hong-Hua Fang, Chuan-Jia Tong, Maria Antonietta Loi, Li-Min Liu N. Zhao*, Phenylalkylamine Passivation of Organolead Halide Perovskites Enabling High-Efficiency and Air-Stable Photovoltaic Cells. Advanced Materials, 28, 9986-9992 (2016) link

  2. H. Yu, H. Lu, F. Xie, S. Zhou, N. Zhao*, Native Defect Induced Hysteresis Behavior in Organolead Iodide Perovskite Solar Cells. Adv. Funct. Mater. (2016) link

  3. J. Cao, F. Wang, H. Yu, Y. Zhou, H. Lu, N. Zhao*, and C. -P. Wong* Porous PbI2 films for the fabrication of efficient, stable perovskite solar cells via sequential deposition. J. Mater. Chem. A (2016) link

  4. J. Mai, T. -K. Lau, J. Li, S. -H. Peng, C. -S. Hsu, U. -S. Jeng, J. Zeng, N. Zhao, X. Xiao, and X. Lu*, Understanding morphology compatibility for high-performance ternary organic solar cells. Chem. Mater. (2016) link

  5. L. Li, F. Wang, X. Wu, H. Yu, S. Zhou, and N. Zhao*, Carrier-activated polarization in organometal halide perovskites. J. Phys. Chem. C (2016) link

  6. X. R. Ding, N. Zhao, G. Z. Yang, R. I. Pettigrew, B. Lo, F. Miao, Y. Li, J. Liu, Y. T. Zhang, Continuous Blood Pressure Measurement From Invasive to Unobtrusive: Celebration of 200th Birth Anniversary of Carl Ludwig. IEEE J. Biomed. Health Inform. (2016) link

  7. J. Liu, Bryan Yan, W. X. Dai, X. R. Ding, Y.T. Zhang, N. Zhao*, Multi-wavelength photoplethysmography method for skin arterial pulse extraction. Biomedical Optics Express 7, 4313-4326 (2016) link

  8. W. X. Dai, Y. T. Zhang, J. Liu, X. R. Ding and N. Zhao*, Dual-modality arterial pulse monitoring system for continuous blood pressure measurement. 38th EMBC, 5773-5776 (2016) link

  9. J. Liu, Y. T. Zhang, X. R. Ding, W. X. Dai and N. Zhao*, A preliminary study on multi-wavelength PPG based pulse transit time detection for cuffless blood pressure measurement. 38th EMBC, 615-618 (2016) link

  10. Hong-Hua Fang, Feng Wang, Sampson Adjokatse, N. Zhao*, Maria Antonietta Loi, Photoluminescence Enhancement in Formamidinium Lead Iodide Thin Films. Advanced Functional Materials 26, 4653-4659 (2016) link

  11. Feng Wang, Jiale Ma, Fangyan Xie, Linkai Li, Jian Chen, Jun Fan, N. Zhao*, Organic Cation-Dependent Degradation Mechanism of Organotin Halide Perovskites. Advanced Functional Materials, 26, 3417-3423 (2016) link

  12. Hong-Hua Fang, Feng Wang, Sampson Adjokatse, N. Zhao, Jacky Even, Maria Antonietta Loi, Photoexcitation dynamics in solution-processed formamidinium lead iodide perovskite thin films for solar cell applications. Light: Science & Applications, 5, e16056(2016) link

  13. Yang Zhou, Feng Wang, Hong-Hua Fang, Maria Antonietta Loi, Fang-Yan Xie, N. Zhao*, Ching-Ping Wong* Distribution of bromine in mixed iodide-bromide organolead perovskites and its impact on photovoltaic performance. Journal of Materials Chemistry A 4, 16191-16197 (2016) link

  14. J. Chen, J. Xu, S. Zhou, N. Zhao*, C.-P. Wong*, Amorphous Nanostructured FeOOH and Co-Ni Double Hydroxides for High-Performance Aqueous Asymmetric Supercapacitors. Nano Energy, 21, 145-153 (2016) link

  15. J. Chen, J. Xu, S. Zhou, N. Zhao*, C.-P. Wong*, Nitrogen-doped Hierarchically Porous Carbon Foam: A Free-Standing Electrode and Mechanical Support for High-Performance Supercapacitors. Nano Energy, 25, 193-202 (2016) link

  16. S. Zhou, L. Li, H. Yu, J. Chen, C.-P. Wong*, N. Zhao*, Thin-Film Electrochemical Capacitors based on Organolead Triiodide Perovskites. Adv. Electron. Mater., 1600114 (2016) link

  17. X. Xu, Y. Yao, B. Shan, X. Gu, D. Liu, J. Liu, J. Xu, N. Zhao, W. Hu, Q. Miao*, Electron Mobility Exceeding 10 cm2V-1s-1 and Band-like Charge Transport in Solution-Processed n-Channel Organic Thin-Film Transistors. Adv. Mater. 28, 5276-5283 (2016) link

  18. H. Xu, Q. Zhu, T. Wu, W. Chen, G. Zhou, J. Li, H. Zhang, N. Zhao, An Organic Water-gated Ambipolar Transistor with A Bulk Heterojunction Active Layer for Stable and Tunable photodetection.. Appl. Phys. Lett. 109, 213301 (2016) link


  1. X. Zhou, H. Xu, J. Cheng, N. Zhao*, S. Chen* Flexure-based Roll-to-roll Platform: A Practical Solution for Realizing Large-area Microcontact Printing. Sci. Rep. 5, 10402 (2015) link

  2. J. Chen, J. Xu, S. Zhou, N. Zhao*, C.-P. Wong* Facile and Scalable Fabrication of Three-dimensional Cu(OH)2 Nanoporous Nanorods for Solid-State Supercapacitors. J. Mater. Chem. A, 3, 17385-17391 (2015) link

  3. J. Chen, J. Xu, S. Zhou, N. Zhao*, C.-P. Wong*, Templated-grown Graphene/Porous Fe2O3 Nanocomposite: A High-Performance Anode Material for Pseudocapacitors.. Nano Energy, 15, 719-728 (2015) link

  4. H. Xu, T. Xiao, J. Li, J. Mai, X. Lu, N. Zhao*, In Situ Probing of the Charge Transport Process at the Polymer/Fullerene Heterojunction Interface. J. Phys. Chem. C, 119, 25598-25605 (2015) link

  5. X. Xu, T. Xiao, X. Gu, X. Yang, S. V Kershaw, N. Zhao, J. Xu, Q. Miao*, Solution-Processed Ambipolar Organic Thin-Film Transistors by Blending p- and n- Semiconductors: Solid Solution verses Microphase Separation. ACS Appl. Mater. Interface,7, 28019-28026 (2015) link

  6. J. Mai, T. -K. Lau, T. Xiao, C. -J. Su, U. Jeng, N. Zhao X. Xiao, and X. Lu*, Ternary morphology facilitated thick-film organic solar cell. RSC Adv. (2015) link

  7. N. Q. Luo, W. X Dai, C. L. Li, Z. Q Zhou, L. Y Lu, Carmen C. Y. Poon, Shih-Chi Chen, Yuanting Zhang, and N. Zhao*, Flexible piezoresistive sensor patch enabling ultra-low power cuffless blood pressure measurement. Adv. Funct. Mater. (2015) link

  8. S. Zhou, J. L. Xu, Y. B. Xiao, N. Zhao*, and C. P. Wang*, Low-temperature Ni particle-templated chemical vapor deposition growth of curved graphene for supercapacitor applications. Nano Energy,13,458-466(2015) link

  9. F. Wang, H. Yu, H. H. Xu, and N. Zhao*, HPbI3: A new precursor compound for highly efficient solution-processed perovskite solar cells. Adv. Funct. Mater.,10,1002(2015) link

  10. X. J. Wu, H. Yu, L. K. Li, F. Wang, H. H. Xu, and N. Zhao*, Composition-dependent electric dipole moment in organometal halide perovskites. J. Phys. Chem. C,119,1252-1259(2015) link

  11. X. J. Wu, H. H. Xu, Y. Wang, A. L. Rogach, Y. Z. Shen, and N. Zhao*, General observation of the memory effect in metal-insulator-ITO structures due to indium diffusion. Semiconductor Science and Technology,30(7), 074002(2015) link

  12. Y. Bai, H. Yu, Z. Zhu, K. Jiang, T. Zhang, N. Zhao*, S. Yang*, H. Yan*, High performance inverted structure perovskite solar cells based on a PCBM: polystyrene blend electron transport layer. J. Mater. Chem. A,3, 9098-9102 (2015) link


  1. S. Zhou, Y. Su, Y. Xiao, N. Zhao*, J. Xu, and C. P. Wong, Low-voltage graphene field-effect transistors based on octadecylphosphonic acid modified solution-processed high- k dielectrics. Nanotechnology,25(26),265201(2014) link

  2. H. Yu, F. Wang, F. Y. Xie, W. W. Li, J. Chen. and N. Zhao*, The role of chlorine in the formation process of "CH3NH3PbI3-xClx" Perovskite. Adv. Funct. Mater. 24, 7102-7108 (2014) link

  3. M. Y. Chen, L. Shao, S. V. Kershaw, H. Yu, J. F. Wang, A. L. Rogach, and N. Zhao*, Photocurrent Enhancement of HgTe Quantum Dot Photodiodes by Plasmonic Gold Nanorod Structures. ACS Nano, 8, 8208 (2014) link

  4. L.Ye, H. H. Xu, H. Yu, W. Y. Xu, H. Li, H. Wang, N. Zhao*, and J. B. Xu*, Ternary bulk heterojunction photovoltaic cells composed of small molecule donor additive as cascade material. J. Phys. Chem. C, 118, 20094 (2014) link

  5. N. Q. Luo, J. Ding, N. Zhao; H. K. Leung, and C. Y. Poon. Mobile Health: Design of Flexible and Stretchable Electrophysiological Sensors for Wearable Healthcare Systems.Paper presented in the 11th International Conference on Wearable and Implantable Body Sensor Networks (BSN 2014), organized by IEEE Eng. Med. Biol. Soc., p.87-91. Zurich, 2014. link

  6. M. Y. Chen, H. Yu, S. V. Kershaw, H. H. Xu, S. Gupta, F. Hetsch, A. L. Rogach, and N. Zhao*, Fast, Air-Stable Infrared Photodetectors based on Spray-Deposited Aqueous HgTe Quantum Dots. Adv. Funct. Mater., 24, 53-59 (2014) link

  7. T. Xiao, H. H. Xu, J. Q. Mai, G. Grancini, A. Petrozza, Y. Wang, X. Xin, Y. Lu, B. S. Ong, U-S. Jeng, X.H. Lu*, and N. Zhao*. Molecular Packing and Electronic Processes in Amorphous-Like Polymer Bulk Heterojunction Solar Cells with Fullerene Intercalation. Sci. Rep., 4, 5211 (2014) link

  8. H. H. Xu, J. Li, J. Q. Mai, T. Xiao, X. H. Lu, and N. Zhao*. Influence of Donor-Acceptor Arrangement on Charge Transport in Conjugated Copolymers. J. Phys. Chem. C, 118, 5600-5605 (2014) link


  1. M. D. Wang, S. Z. Zheng, X. Wan, Y. R. Su, N. Ke, N. Zhao*, K. Y. Wong, and J. B. Xu*, Limit of Voc in polymeric bulk heterojunction solar cells predicted by a double-junction model. Sol. Energ. Mat. Sol. Cells. 108, 17-21 (2013) link

  2. H.H. Xu, Y.Q. Jiang, J. Li, B. S. Ong, Z.G. Shuai, J.B. Xu and N. Zhao*, Spectroscopic Study of Electron and Hole Polarons in a High-Mobility Donor-Acceptor Conjugated Copolymer. J. Phys. Chem. C, 2013, 117(13): 6835-6841. link

  3. F. Hetsch, N. Zhao, S.V. Kershaw, and A. L. Rogach1, Quantum dot field effect transistors. Mater. Today, 16, 312 (2013). link

  4. Y. F. Zhang, F. S. Zu, S. T. Lee, L. S. Liao, N. Zhao and B. Q. Sun, Heterojunction with Organic Thin Layer on Silicon for Record Efficiency Hybrid Solar Cell. Adv. Energy Mater, Early View (2013). link

  5. H. H. Xu, J. Li, B. H. K. Leung, C. C. Y. Poon B.S. Ong, Y.T. Zhang, and N. Zhao*. A High-Sensitivity Near-Infrared Phototransistor Based on Organic Bulk Heterojunction. Nanoscale, 2013, 117(13): 6835-6841. link


  1. X. M. Wamg; W. G. Xie; J. Du; C. L. Wang; N. Zhao and J. B. Xu, Graphene/Metal contacts: Bistable states and novel memory devices. Adv. Mater. , 24, 2614-19 (2012) link

  2. T.P. Osedach, N. Zhao, T.L. Andrew, P.R. Brown; D. D. Wanger, D.B. Strasfeld, L.Y. Chang, M. Bawendi and V. Bulovic, Bias-Stress Effect in 1,2-Ethanedithiol- Treated PbS Quantum Dot Field-Effect Transistors. ACS Nano , 6, 3121-3127 (2012) link


  1. Y. R. Su, C. L. Wang, W. G. Xie, F. Y. Xie, J. Chen, N. Zhao*, and J.B. Xu*, Low-Voltage Organic Field-Effect Transistors (OFETs) with Solution-Processed Metal-Oxide as Gate Dielectric, ACS Appl. Mater. Inter. ,3, 4662-4667 (2011) link

  2. M. D. Wang, F. Y. Xie, J. Du, Q. Tang, S. Z. Zheng, Q. Miao, J Chen, N. Zhao and J.B. Xu, Degradation Mechanism of Organic Solar Cells with Aluminum Cathode, Sol. Energ. Mat. Sol. Cells. 95, 3303-3310 (2011) link

  3. C. L. Wang, X. M. Wamg, J. Min, N. Zhao, J.B. Xu, Super-linear rectifying property of rubrene single crystal devices, Org. Electron., 12, 1731-1735 (2011) link

  4. C. L. Wang, Z. X. Liang, Y. L. Liu, XM Wamg, N. Zhao, Q. Miao, WP Hu, and J.B. Xu, Single crystal n-channel field effect transistors from solution-processed silylethynylated tetraazapentacene, J. Mater. Chem., 21, 15201-15204 (2011) link

  5. M. D. Wang, F. Y. Xie, W. G. Xie, S. Z. Zheng, N. Ke, J. Chen, N. Zhao, and J. B. Xu, Device lifetime improvement of polymer-based bulk heterojunction solar cells by incorporating copper oxide layer at Al cathode, Appl. Phys. Lett., 98, 183304 (2011) link

  6. P. R. Brown, R. R. Lunt, N. Zhao, T. P. Osedach, D. D. Wanger, L. Y. Chang, M. Bawendi, and V. Bulovic, Improved Current Extraction from ZnO/PbS Quantum Dot Heterojunction Photovoltaics Using a MoO3 Interfacial Layer, Nano Lett.., 11, 2955 (2011) link

  7. S. Q. Ren, N. Zhao, S. C. Crawford, M. Tambe, V. Bulovic, S. Gradecak, Heterojunction photovoltaics using GaAs Nanowires and conjugated polymers, Nano Lett, 11, 408 (2011) link

  8. M. J. Lee, D. Gupta1, N. Zhao, M. Heeney, I. McCulloch, and H. Sirringhaus, Anisotropy of Charge Transport in a Uniaxially Aligned and Chain-Extended, High-Mobility, Conjugated Polymer Semiconductor, Adv. Funct. Mater., 21, 932 (2011) link


  1. S. M. Geyer, P. M. Allen, L. Y. Chang, C. R. Wong, T. P. Osedach, N. Zhao, V. Bulovic, and M. Bawendi, Control of the carrier type in InAs nanocrystal films by predeposition incorporation of Cd, ACS Nano, 4, 7373 (2010). link

  2. T. P. Osedach, N. Zhao, S. M. Geyer, L. Y. Chang, D. D. Wanger, A. C. Arango, M. Bawendi, and V. Bulovic, Interfacial Recombination for Fast Operation of a Planar Organic/QD Infrared Photodetector, Adv. Mater., 22 5250-5254 (2010). link

  3. H. Sirringhaus, M. Bird and N. Zhao, Charge Transport Physics of Conjugated Polymer Field-Effect Transistors, Adv. Mater., 22, 3893-3898 (2010) link

  4. N. Zhao, T. P. Osedach, L-Y Chang, S. Geyer, M. B. Binda, M. Bawendi, and V. Bulovic, Colloidal PbS quantum dots solar cells with high fill factor, ACS Nano, 4, 3743 (2010) link


  1. T. Hallam, M. J. Lee, N. Zhao, I. Nandhakumar, M. Kemerink, M. Heeney and I. McCulloch, and H. Sirringhaus, Local charge trapping in conjugated polymers resolved by scanning Kelvin Probe microscopy, Phys. Rev. Lett., 103, 256803 (2009) link

  2. N. Zhao, Y. Y. Noh, J. F. Chang, H. Sirringhaus, M. Heeney, and I. McCulloch, Spectroscopic evidence for polaron localization at interfaces in high-mobility microcrystalline conjugated polymers, Adv. Mater., 21, 3759-3763 (2009)link

  3. M. Kemerink, T. Hallam, M.-J. Lee, N. Zhao and H. Sirringhaus, Temperature- and density-dependent channel potentials in high-mobility organic field-effect transistors, Phys. Rev. B, 80, 115325 (2009) link


  1. L. Herlogsson, Y. Y. Noh, N. Zhao, X. Crispin, H. Sirringhaus, M. Berggren, Downscaling of organic field-effect transistors with a polyelectrolyte gate Insulator. Adv. Mater., 20, 4708-4713 (2008)link


  1. Y. Y. Noh, N. Zhao, M. Caironi, and H. Sirringhaus, Downscaling of self-aligned, all-printed polymer thin-film transistors, Nat. Nanotechnol., 2, 784 - 789 (2007) link

  2. N. Zhao, M. Chiesa, H. Sirringhaus, Y. Li, Y. Wu, and B. S. Ong, Self-aligned inkjet printing of highly conducting gold electrodes with submicron resolution, J. Appl. Phys., 101, 064513 (2007) link


  1. Y. Y. Noh*, N. Zhao, X.Y. Cheng*, and H. Sirringhaus*. Self-aligned printing of high-performance polymer thin-film transistors. 2006 International Electron Devices Meeting, Vols 1 and 2: 37-40 (2006) link

  2. J. F. Chang, J. Clark, N. Zhao, H. Sirringhaus, D. Breiby, J. W. Andreasen, M. M. Nielsen, M. Giles, M. Heeney, and I. McCulloch, Molecular-weight dependence of interchain polaron delocalization and exciton bandwidth in high-mobility conjugated polymers, Phys. Rev. B, 74, 115318 (2006) link


  1. Y. Wu, P. Liu, B. S. Ong, T. Srikumar, N. Zhao, G. A. Botton, and S. Zhu, Controlled orientation of liquid-crystalline polythiophene semiconductors for high-performance organic thin-film transistors, Appl. Phys. Lett., 86, 142102 (2005) link

  2. N. Zhao, O. Marinov, G. A. Botton, M. J. Deen, B. S. Ong, Y. Wu, and P. Liu, Characterization of MOS structures based on poly (3,3'''-dialkyl-quaterthiophene), IEEE Trans. Electron. Dev., 52, 2150 (2005) link


  1. N. Zhao, G. A. Botton, S. Zhu, A. Duft, B. S. Ong, Y. Wu, and P. Liu, Microscopic Studies on Liquid Crystal Poly(3,3'''-dialkylquaterthiophene) Semiconductor, Macromolecules, 37 (22), 8307 -8312 (2004) link


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