以纳米和新能源材料中关键性科学问题为导向，侧重于材料的纳米改性和器件运作的原位研究，同时致力于将X射线和光谱学技术应用于以上领域。

具体包括以下几个方面：（1）同步辐射X射线散射和谱学方法的发展；（2）基于X射线和光学的多维度原位表征技术的研发；（3）新能源材料的纳米尺度改性和器件的制备、表征与原位研究，包括太阳能电池和锂离子电池；（4）纳米材料的组装与自组装。

1. B. Chen, K. Meng, Z. Qiao, Y. Zhai, R. Yu, Z. Fang, P. Yan, M. Xiao, L. Pan, L. Zheng, K. Cao, and G. Chen*, “Surface Crystallization Modulation Towards Highly-Oriented and Phase-Pure Two-Dimensional Perovskite Solar Cells”, Adv. Mater. (2024), DOI: 10.1002/adma.202312054.

2. Y. Li, Y. Hu, S. Wang, X. Zhou, Y. Yang, X. Xiao, and G. Chen*, “Compressible and Elastic Reduced Graphene Oxide Sponge for Stable and Dendrite-Free Lithium Metal Anodes”, Nano Lett. 24, 672 (2024).

3. Z. Qiao, X. Wang, Y. Zhai, R. Yu, Z. Fang, and G. Chen*, “In Situ Real-Time Observation of Formation and Self-Assembly of Perovskite Nanocrystals at High Temperature”, Nano Lett. 23, 10788 (2023).

4. S. Wang, Y. Li, X. Zhou, Y. Yang, and G. Chen*, “Lithiophilic SiO₂ Nanoparticle Pillared MXene Nanosheets for Stable and Dendrite-Free Lithium Metal Anodes”, J. Mater. Chem. A 11, 20165 (2023).

5. Y. Zhai, Z. Qiao, R. Yu, Z. Fang, G. Chen*, and Z. Zhu*, “In Situ X-ray Scattering Observation and Collective Analyses of the Complete Formation Process of Mesoporous SBA-15”, J. Phys. Chem. C 127, 18127 (2023).

6. K. Meng, B. Chen, M. Xiao, Y. Zhai, Z. Qiao, R. Yu, L. Pan, L. Zheng, and G. Chen*, “Humidity-Insensitive, Large-Area Applicable, Hot-Air-Assisted Ambient Fabrication of Two-Dimensional Perovskite Solar Cells”, Adv. Mater. 35, 2209712 (2023).

7. M. Xiao, K. Meng, Y. Zhai, Z. Qiao, R. Yu, B. Chen, L. Pan, L. Wu, L. Zheng, Z. Fang, and G. Chen*, “In Situ Observation and Control of Crystallization Dynamics for Stable and Efficient CsPbI₃-Based 2D Perovskite Solar Cells”, ACS Appl. Energy Mater. 6, 10205 (2023).

8. B. Chen, Z. Liu, K. Meng*, Z. Qiao, Y. Zhai, R. Yu, L. Wu, M. Xiao, L. Pan, L. Zheng, and G. Chen*, “In Situ Observing and Tuning the Crystal Orientation of Two-Dimensional Layered Perovskite via the Chlorine Additive”, Nano Lett. 22, 7826 (2022).

9. Y. Li, S. Wang, Y. Hu, X. Zhou, M. Zhang, X. Jia, Y. Yang, B. Lin, and G. Chen*, “Highly Dispersed Pt Nanoparticles on 2D MoS₂ Nanosheets for Efficient and Stable Hydrogen Evolution Reaction”, J. Mater. Chem. A 10, 5273 (2022). 

10. L. Cheng, K. Meng, Z. Qiao, Y. Zhai, R. Yu, L. Pan, B. Chen, M. Xiao and G. Chen*, “Tailoring Interlayer Spacers for Efficient and Stable Formamidinium-Based Low-Dimensional Perovskite Solar Cells”, Adv. Mater. 34, 2106380 (2022).

11. K. Meng, C. Wang, Z. Qiao, Y. Zhai, R. Yu, N. Liu*, R. Gao, B. Chen, L. Pan, M. Xiao, and G. Chen*, “Humidity-Induced Defect-Healing of Formamidinium-Based Perovskite Films”, Small 17, 2104165 (2021).

12. M. Zhang, Y. Hu, S. Wang, Y. Li, C. Wang, K. Meng, and G. Chen*, “A Nanomesh Electrode for Self-Driven Perovskite Photodetectors with Tunable Asymmetric Schottky Junctions”, Nanoscale 13, 17147 (2021).

13. K. Meng, X. Wang, Z. Li, Z. Liu, Z. Qiao, C. Wang, Y. Hu, S. Li, L. Cheng, Y. Zhai, and G. Chen*, “Self-Passivation of Low-Dimensional Hybrid Halide Perovskites Guided by Structural Characteristics and Degradation Kinetics”, Energy Environ. Sci. 14, 2357 (2021).

14. Y. Hu, X. Wang, M. Zhang, S. Wang, S. Li, and G. Chen*, “A Hierarchical Anodic Aluminum Oxide Template”, Nano Lett. 21, 250 (2021).

15. L. Cheng, Z. Liu, S. Li, Y. Zhai, X. Wang, Z. Qiao, Q. Xu, K. Meng, Z. Zhu, and G. Chen*, “Highly thermostable and efficient formamidinium-based low-dimensional perovskite solar cells”, Angew. Chem. Int. Ed. 60, 856 (2021).

16. S. Li, Z. Liu, Z. Qiao, X. Wang, L. Cheng, Y. Zhai, Q. Xu, Z. Li, K. Meng, and G. Chen*, “Interfacial Structure and Composition Managements for High-Performance Methylammonium-Free Perovskite Solar Cells”, Adv. Funct. Mater. 30, 2005846 (2020).

17. Z. Liu, L. Wu, X. Wang, Q. Xu, Y. Hu, K. Meng*, and G. Chen*, “Improving efficiency and stability of colorful perovskite solar cells with two-dimensional photonic crystals”, Nanoscale 12, 8425 (2020).

18. Z. Liu, K. Meng, X. Wang, Z. Qiao, Q. Xu, S. Li, L. Cheng, Z. Li, and G. Chen*, “In Situ Observation of Vapor-Assisted 2D-3D Heterostructure Formation for Stable and Efficient Perovskite Solar Cells”, Nano Lett. 20, 1296 (2020).

19. M. Du, K. Zhou*, X. Wang, J. Zhang, Y. Zhang, J. Dong, L. Wu, Z. Qiao, G. Chen*, and Q. Wang*, “Precise Fabrication of De Novo Nanoparticle Lattices on Dynamic 2D Protein Crystalline Lattices”, Nano Lett. 20,1154 (2020).

20. X. Wang, L. Wu, G. Wang, and G. Chen*, “Dynamic Crystallization and Phase Transition in Evaporating Colloidal Droplets”, Nano Lett. 19, 8225 (2019).

21. Q. Xu, K. Meng, Z. Liu, X. Wang, Y. Hu, Z. Qiao, S. Li, L. Cheng, and G. Chen*, “Synergistic improvements in efficiency and stability of 2D perovskite solar cells with metal ion doping”, Adv. Mater. Interf. 6, 1901259 (2019).

22. Z. Li, N. Liu, K. Meng^*, Z. Liu, Y. Hu, Q. Xu, X. Wang, S. Li, L. Cheng, and G. Chen^*, “A New Organic Interlayer Spacer for Stable and Efficient 2D Ruddlesden-Popper Perovskite Solar Cells”, Nano Lett. 19, 5237 (2019).

23. K. Meng, X. Wang, Q. Xu, Z. Li, Z. Liu, L. Wu, Y. Hu, N. Liu, and G. Chen^*, “In Situ Observation of Crystallization Dynamics and Grain Orientation in Sequential Deposition of Metal Halide Perovskites”, Adv. Funct. Mater. 29, 1902319 (2019) (Cover).

24. L. Wu, X. Wang, and G. Chen^*, “Experimental evidence for x-ray standing wave modulated surface scattering effect”, Appl. Phys. Lett. 114, 141601 (2019) (Cover & Editor’s Pick).

25. Z. He, H. Jiang, L. Wu, J. Liu^*, G. Wang, X. Wang, J. Wang, Z. Hou, G. Chen^*, and S. Yu^*, “Real-Time Probing of Nanowire Assembly Kinetics at the Air-Water Interface by In Situ Synchrotron X-Ray Scattering”, Angew. Chem. Int. Ed. 57, 8130 (2018).

26. L. Wu, X. Wang, G. Wang, and G. Chen^*, “In Situ X-ray scattering observation of two-dimensional interfacial colloidal crystallization”, Nature Commun. 9, 1335 (2018).

27. J. Zhang, X. Wang, K. Zhou, G. Chen^*, and Q. Wang^*, “Self-Assembly of Protein Crystals with Different Crystal Structures Using Tobacco Mosaic Virus Coat Protein as a Building Block”, ACS Nano 12, 1673 (2018).

28. K. Meng, L. Wu, Z. Liu, X. Wang, Q. Xu, Y. Hu, S. He, X. Li, T. Li, and G. Chen^*, “In Situ Real-Time Study of the Dynamic Formation and Conversion Processes of Metal Halide Perovskite Films”, Adv. Mater. 30, 1706401 (2018).

29. K. Meng, Z. Liu, L. Wu, X. Wang, Q. Xu, Y. Hu, Z. Xiu, and G. Chen^*, “Controllable Formation of Efficient CuSe Counter Electrodes for Quantum Dot Sensitized Solar Cells”, J. Electrochem. Soc. 164, F1566 (2017).

30. Y. Liu, D. Shen, G. Chen, A. A. Elzatahry, M. Pal, H. Zhu, L. Wu, J. Lin, D. Al-Dahyan, W. Li^*, and D. Zhao^*, “Mesoporous Silica Thin Membranes with Large Vertical Mesochannels for Nanosize-Based Separation”, Adv. Mater. 29, 1702274 (2017).

31. G. Wang, K. Meng, Z. He, L. Wu, Z. Liu, X. Wang, W. Li, R. Tai, S. Yu, and G. Chen^*, “Wide-angle polarization-free plasmon-enhanced light absorption in perovskite films using silver nanowires”, Opt. Express 25, 3594 (2017).

32. L. Wu, Y. Liu, X. Wang, G. Wang, D. Zhao, and G. Chen^*, “X-ray standing wave enhanced scattering from mesoporous silica thin films”, Appl. Phys. Lett. 110, 041603 (2017).

33. Y. Liu, K. Lan, S. Li, Y. Liu, B. Kong, G. Wang, P. Zhang, R. Wang, H. He, Y. Ling, A. M. Al-Enizi, A. A. Elzatahry, Y. Cao, G. Chen, and D. Zhao^*, “Constructing Three-Dimensional Mesoporous Bouquet-Posy-like TiO2 Superstructures with Radially Oriented Mesochannels and Single-Crystal Walls”, J. Am. Chem. Soc. 139, 517 (2017).

34. H. Li, M. Xie, C. Cui, D. He, M. Gong, J. Jiang^*, Y. Zheng, G. Chen, Y. Lei, and S. Yu^*, “Surface Charge Polarization at the Interface: Enhancing the Oxygen Reduction via Precise Synthesis of Heterogeneous Ultrathin Pt/PtTe Nanowire”(cover), Chem. Mater. 28, 8890 (2016).

35. G. Wang, L. Xu, L. Wu, K. Meng, X. Wang, Z. Liu, C. Fan, and G. Chen^*, “X-ray and optical characterizations of DNA-mediated Janus nanostructures”, Appl. Phys. Lett. 109, 233101 (2016).

36. K. Meng, G. Shan, L. Wu, G. Wang, X. Liu, G. Chen, Z. Liu, and G. Chen^*, “Two-Dimensional Organic-Inorganic Hybrid Perovskite Photonic Films”, Nano Lett. 16, 4166 (2016).

37. L. Xu, G. Wang, J. Shen, H. Geng, W. Li, L. Wu, G. Shan, J. Wang, L. Wang, C. Fan^*, and G. Chen^*, “Structural and optical control of DNA-mediated Janus plasmonic nanostructures”, Nanoscale 8, 9337 (2016).

38. W. Li, G. Wang, X. Zhang, H. Geng, J. Shen, L. Wang, J. Zhao, L. Xu, L. Zhang, Y. Wu, R. Tai, and G. Chen^*, “Geometrical and morphological optimizations of plasmonic nanoarrays for high-performance SERS detection”, Nanoscale 7, 15487 (2015).

39. K. Meng, G. Chen^*, and K. Thampi^*, “Metal chalcogenides as counter electrode materials in quantum dot sensitized solar cells: a perspective”, J. Mater. Chem. A 3, 23074 (2015).

40. Y. Liu, R. Che, G. Chen, J. Fan, Z. Sun, Z. Wu, M. Wang, B. Li, J. Wei, Y. Wei, G. Wang, G. Guan, A. Elzatahry, A. Bagabas, A. Al-Enizi, Y. Deng, H. Peng, and D. Zhao^*, “Radially oriented mesoporous TiO₂ microspheres with single-crystal-like anatase walls for high-efficiency optoelectronic devices”, Science Advances 1, e1500166 (2015).

41. J. Shen, L. Xu, C. Wang, H. Pei, R. Tai, S. Song, Q. Huang, C. Fan^*, and G. Chen^*, “Dynamic and Quantitative Control of the DNA-Mediated Growth of Gold Plasmonic Nanostructures”,Angew. Chem. Int. Ed. 53, 8338 (2014).

42. X. Liu, X. Chen^*, J. Wang, G. Chen^*, and H. Zhang^*, “Hydrogen-Bonded Polymers with Bent-Shaped Side Chains and Poly(4-vinylpridine) Backbone: Phase Behavior and Thin Film Morphologies”, Macromolecules 47, 3917 (2014).

43. L. Gomez et al. (LCLS project), “Shapes and vorticities of superfluid helium nanodroplets”, Science 345, 906 (2014).

44. G. Chen^*, P. H. Zwart, and D. Li, “Component Particle Structure in Heterogeneous Disordered Ensembles Extracted from High-Throughput Fluctuation X-Ray Scattering”, Phys. Rev. Lett. 110, 195501 (2013).

45. G. Chen, I. Miotkowski, and A. K. Ramdas, “Lyman spectra of holes bound to Cu, Ag, and Au acceptors in ZnTe and CdTe”, Phys. Rev. B 85, 165210 (2012).

46. G. Chen, M. Modestino, B. Poon, A. Schirotzek, S. Marchesini, R. Segalman, A. Hexemer, and P. Zwart, “Structure determination of Pt-coated Au dumbbells via fluctuation X-ray scattering”, J. Synchrotron Rad. 19, 695 (2012).

47. L. Tayebi, Y. Ma, D. Vashaee, G. Chen, S. Sinha, and A. Parikh, “Long-range interlayer alignment of intralayer domains in stacked lipid bilayers”(cover), Nature Mater. 11, 1074 (2012).

48. G. Chen, J. S. Bhosale, I. Miotkowski, and A. K. Ramdas, “Spectroscopic signatures of novel oxygen-defect complexes in stoichiometrically controlled CdSe”, Phys. Rev. Lett. 101, 195502 (2008).

49. G. Chen, I. Miotkowski, S. Rodriguez, and A. K. Ramdas, “Stoichiometry driven impurity configurations in compound semiconductors”, Phys. Rev. Lett. 96, 035508 (2006).