Choi Lab

Department of Chemical Engineering,
University of Virginia
ail: jjc6z[at]virginia[dot]edu
Phone: 434-243-1822
Webmaster: Alex Chen
102 Engineers' Way
P.O. Box 400741
Charlottesville, VA

Google Scholar (Cumulative Citations: >2500, 'h' index = 19)

32. B. J. Foley*, S. A. Cuthriell, S. Yazdi, A. Z. Chen, S. M. Guthrie, X. Deng, G. Giri, S.-H. Lee, K. Xiao, B. Doughty, Y.-Z. Ma*, J. J. Choi* “Impact of Crystallographic Orientation Disorders on Electronic Heterogeneities in Metal Halide Perovskite Thin Films” (submitted) (*corresponding authors)

31. M. R. Alpert, J. S. Niezgoda, A. Z. Chen, B. J. Foley, S. Cuthriell, L. U. Yoon and J. J. Choi* “Colloidal Nanocrystals as a Platform for Rapid Screening of Charge Trap Passivating Molecules for Metal Halide Perovskite Thin Films” Chemistry of Materials (in revision) (*corresponding author)

30. A. Z. Chen, M. Shiu, J. H. Ma, M. R. Alpert, D. Zhang, B. J. Foley, D.-M. Smilgies, S.-H. Lee and J. J. Choi* “
Origin of vertical orientation in two-dimensional metal halide perovskites and its effect on photovoltaic performance” Nature Communications, 9, 1336 (2018) (*corresponding author)

29. X. Deng, G. C. Wilkes, A. Z. Chen, N. Prasad, M. C. Gupta*, J. J. Choi* “
Room Temperature Processing of TiOx Electron Transporting Layer for Perovskite Solar Cells” The Journal of Physical Chemistry Letters, 8, 3206 – 3210 (2017). (*corresponding author)

28. T. Chen, W.-L. Chen, B. J. Foley, J. Lee, J. P. C. Ruff, J. Y. P. Ko, C. M. Brown, L. W. Harriger, D. Zhang, C. Park, M. Yoon, Y.-M. Chang, J. J. Choi*, and S.-H. Lee* “
Origin of Long Lifetime of Band-Edge Charge Carriers in Organic-Inorganic Lead Iodide Perovskites” Proceedings of the National Academy of Sciences, 114, 7519 - 7524 (2017) (*corresponding author)

27. J. S. Niezgoda, B. J. Foley, A. Z. Chen and J. J. Choi* “
Improved Charge Collection in Highly Efficient CsPbBrI2 Solar Cells with Light-Induced Dealloying” ACS Energy Letters, 2, 1043 – 1049 (2017) (*corresponding author)

26. A. Z. Chen, B. J. Foley, J. H. Ma, M. R. Alpert, J. S. Niezgoda, and J. J. Choi* “
Crystallographic Orientation Propagation in Metal Halide Perovskite Thin Films” Journal of Materials Chemistry A, 5, 7796 – 7800 (2017) (*corresponding author)

25. B. J. Foley, J. Girard, B. A. Sorenson, A. Z. Chen, J. S. Niezgoda, M. R. Alpert, A. F. Harper, D.-M. Smilgies, P. Clancy, W. A. Saidi, and J. J. Choi* “
Controlling Nucleation, Growth, and Orientation of Metal Halide Perovskite Thin Films with Rationally Selected Additives” Journal of Materials Chemistry A, 5, 113 - 123 (2017) (inside front cover) (*corresponding author)

24. T. Chen, B. J. Foley, C. Park, C. M. Brown, L. W. Harriger, J. Lee, J. Ruff, M. Yoon, J. J. Choi*, and S.-H. Lee* “
Entropy Driven Structural Transition and Kinetic Trapping in Formamidinium Lead Iodide Perovskite” Science Advances, 2, e1601650 (2016) (*corresponding authors)

23. W. A. Saidi* and J. J. Choi “
Nature of the Cubic to Tetragonal Phase Transition in Methylammonium Lead Iodide Perovskite” The Journal of Chemical Physics, 145, 144702 (2016) (*corresponding author)

22. J. J. Choi* and S. J. L. Billinge,* "
Perovskites at the nanoscale: from fundamendtals to applications", Nanoscale, 8, 6206 (2016) (*corresponding authors)

21. A. Slonopas, B. J. Foley, J. J. Choi,* M. C. Gupta,* “
Charge Transport in Bulk CH3NH3PbI3 Perovskite”, Journal of Applied Physics, 119, 074101 (2016) (*corresponding authors)

20. T. Chen,§ B. J. Foley, § B. Ipek, M. Tyagi, J. R. D. Copley, C. M. Brown, J. J. Choi,* S.-H. Lee,* "Rotational Dynamics of Organic Cations in CH3NH3PbI3 Perovskite", Physical Chemistry Chemical Physics, 17, 31278 (2015). (§co-first authors, *corresponding authors)

. B. J. Foley, D. L. Marlowe, K. Sun, W. A. Saidi, L. Scudiero,* M. C. Gupta,* J. J. Choi,* Temperature Dependent Energy Levels of Methylammonium Lead Iodide Perovskite Applied Physics Letters, 106, 243904 (2015) (*corresponding authors)

Prior to University of Virginia

18. J. J. Choi,* X. Yang,* Z. M. Norman, S. J. L. Billinge, J. S. Owen, "
Structure of Methylammonium Lead Iodide Within Mesoporous Titanium Dioxide: Active Material in High-Performance Perovskite Solar Cells" Nano Letters, 14, 127-133 (2014) (*equal contribution)

17. B. R. Hyun, J. J. Choi, K. L. Seyler, T. Hanrath, F. W. Wise, "
Heterojunction PbS Nanocrystal Solar Cells with Oxide Charge-Transport Layers" ACS Nano, 7, 10938-10947 (2013)

16. N. C. Anderson, M. P. Hendricks, J. J. Choi, J. S. Owen, "
Ligand Exchange and the Stoichiometry of Metal Chalcogenide Nanocrystals: Spectroscopic Observation of Facile Metal-Carboxylate Displacement and Binding" Journal of the American Chemical Society, 135, 18536-18548 (2013)

15. M. T. Trinh, M. Y. Sfeir, J. J. Choi, J. S. Owen, X. Zhu, "
A Hot Electron-Hole Pair Breaks the Symmetry of a Semiconductor Quantum Dot" Nano Letters, 13, 6091-6097 (2013)

14. J. J. Choi, K. Bian, W. J. Baumgardner, D. M. Smilgies, T. Hanrath, “
Interface-induced Nucleation, Orientational Alignment and Symmetry Transformations in Nanocube Superlattices” Nano Letters, 12, 4791-4798 (2012)

13. L. Sun,* J. J. Choi,* D. Stachnik, A. C. Bartnik, B. R. Hyun, G. G. Malliaras, T. Hanrath, F. W. Wise, "
Bright infrared quantum-dot light-emitting diodes through inter-dot spacing control" Nature Nanotechnology, 7, 396-373. (2012) (*equal contribution)

12. C. R. Bealing, W. J. Baumgardner, J. J. Choi, T. Hanrath, R. G. Hennig, "
Predicting Nanocrystal Shape through Consideration of Surface-Ligand Interactions" ACS Nano, 6, 2118-2127 (2012)

11. Y. F. Lim, J. J. Choi, T. Hanrath, "
Facile Synthesis of Colloidal CuO Nanocrystals for Light-Harvesting Applications" Journal of Nanomaterials, Article ID 393160 (2012)

10. W. J. Baumgardner, J. J. Choi, K. Bian, L. F. Kourkoutis, D. M. Smilgies, M. O. Thompson, T. Hanrath, "
Pulsed Laser Annealing of Thin Films of Self-Assembled Nanocrystals" ACS Nano, 5, 7010-7019 (2011)

9. J. J. Choi,* W. N. Wenger*, R. S. Hoffman*, Y. F. Lim, J. Luria, J. Jasieniak, J. A. Marohn, T. Hanrath, “
Solution Processed Nanocrystal Quantum Dot Tandem Solar Cells” Advanced Materials, 23, 3144-3148 (2011) (*equal contribution)

8. K. Bian,* J. J. Choi,* A. Prakash, P. Clancy, D. M. Smilgies, T. Hanrath, “
Shape-anisotropy Driven Symmetry Transformations in Nanocrystal Superlattice Polymorphs” ACS Nano, 5, 2815–2823 (2011) (*equal contribution)

7. J. J. Choi, C. R. Bealing, K. Bian, K. J. Hughes, W. Zhang, D. M. Smilgies, R. G. Hennig, J. R. Engstrom, T. Hanrath, “
Controlling Nanocrystal Superlattice Symmetry and Shape-anisotropic Interactions Through Variable Ligand Surface Coverage” Journal of the American Chemical Society, 133, 3131-3138 (2011)

6. W. J. Baumgardner, J. J. Choi, Y. F. Lim, T. Hanrath, “
SnSe Nanocrystals: Synthesis, Structure, Optical Properties, and Surface Chemistry” Journal of American Chemical Society, 132, 9519-9521 (2010)

5. J. J. Choi, J. Luria, B. R. Hyun, A. C. Bartnik, L. Sun, Y. F. Lim, J. A. Marohn, F. W. Wise, T. Hanrath, “
Photogenerated Exciton Dissociation in Highly Coupled Lead Salt Nanocrystal Arrays” Nano Letters, 10, 1805-1811 (2010)

4. B. R. Hyun, A. C. Bartnik, J. K. Lee, H. Imoto, L. F. Sun, J. J. Choi, Y. Chujo, T. Hanrath, C. K. Ober, F. W. Wise, “
Role of Solvent Dielectric Properties on Charge Transfer from PbS Nanocrystals Molecules” Nano Letters, 10, 318-323 (2010)

3. J. J. Choi, Y. F. Lim, M. B. Santiago-Berrios, M. Oh, B. R. Hyun, L. Sun, A .C. Bartnik, A. Goedhart, G. G. Malliaras, H. D. Abruña, F. W. Wise and T. Hanrath, “
PbSe Nanocrystal Excitonic Solar Cells” Nano Letters, 9, 3749-3755 (2009)

2. T. Hanrath, J. J. Choi, and D. M. Smilgies, “
Structure/Processing Relationships of Highly Ordered Lead Salt Nanocrystal Superlattices” ACS Nano, 3, 2975-2988 (2009)

1. T. Hanrath, D. Veldman, J. J. Choi, C. G. Christova, M. M. Wienk, and R. A. J. Janssen, “
PbSe Nanocrystal Network Formation during Pyridine Ligand Displacement” ACS Applied Materials and Interfaces, 1, 244–250 (2009)

Choi Laboratory for Optoelectronic Nanomaterials
Department of Chemical Engineering