Faculty Profiles - GUO Dengyang | The Hong Kong University of Science and Technology

2023 1

Study the ultrafast dynamics of excited states by time-resolved spectroscopies

Guo, Dengyang
Conference paper

2022 1

Soliton Disentangling and Ferroelectric Hysteresis in Bilayer MoS₂ Nanostructures with Reconstructed Moiré Superlattices

ACS Applied Nano Materials, v. 5, (12), December 2022, p. 17461-17467
Li, Yanshuang; Zeng, Huan; Xie, Xiuhua; Li, Binghui; Liu, Jishan; Wang, Shuangpeng; Guo, Dengyang; Li, Yuanzheng; Liu, Weizhen; Shen, Dezhen
Article

2021 2

Perovskite solar cells with embedded homojunction via nonuniform metal ion doping

Cell Reports Physical Science, v. 2, (5), 19 May 2021, article number 100415
Lin, Yuze; Li, Tao; Liu, Ye; Bahrami, Behzad; Guo, Dengyang; Fang, Yanjun; Shao, Yuchuan; Chowdhury, Ashraful Haider; Wang, Qi; Deng, Yehao; Gruverman, Alexei; Savenije, Tom J.; Qiao, Qiquan; Huang, Jinsong
Article

Stabilized tilted-octahedra halide perovskites inhibit local formation of performance-limiting phases

Science, v. 374, (6575), December 2021, p. 1598-1605
Doherty, Tiarnan A.S.; Nagane, Satyawan; Kubicki, Dominik J.; Jung, Young-Kwang; Johnstone, Duncan N.; Iqbal, Affan N.; Guo, Dengyang; Frohna, Kyle; Danaie, Mohsen; Tennyson, Elizabeth M.; Macpherson, Stuart; Abfalterer, Anna; Anaya, Miguel; Chiang, Yu-Hsien; Crout, Phillip; Ruggeri, Francesco Simone; Collins, Sean M.; Grey, Clare P.; Walsh, Aron; Midgley, Paul A.; Stranks, Samuel D.
Article

2020 3

Dual-source vacuum deposition of pure and mixed halide 2D perovskites: Thin film characterization and processing guidelines

Journal of Materials Chemistry C, v. 8, (6), February 2020, p. 1902-1908
La-Placa, Maria-Grazia; Guo, Dengyang; Gil-Escrig, Lidón; Palazon, Francisco; Sessolo, Michele; Bolink, Henk J.
Article

Quantifying Charge-Carrier Mobilities and Recombination Rates in Metal Halide Perovskites from Time-Resolved Microwave Photoconductivity Measurements

Advanced Energy Materials, v. 10, (26), July 2020, article number 1903788
Savenije, Tom J.; Guo, Dengyang; Caselli, Valentina M.; Hutter, Eline M.
Article

Predicting the Maximum Open Circuit Voltage of Perovskite Solar Cells from Time-Resolved Measurements

Guo, Dengyang
Conference paper

2019 5

A Highly Emissive Surface Layer in Mixed-Halide Multication Perovskites

Advanced Materials, v. 31, (42), October 2019, article number 1902374, Special Issue: Graphdiyne
Andaji-Garmaroudi, Zahra; Abdi-Jalebi, Mojtaba; Guo, Dengyang; Macpherson, Stuart; Sadhanala, Aditya; Tennyson, Elizabeth M.; Ruggeri, Edoardo; Anaya, Miguel; Galkowski, Krzysztof; Shivanna, Ravichandran; Lohmann, Kilian; Frohna, Kyle; Mackowski, Sebastian; Savenije, Tom J.; Friend, Richard H.; Stranks, Samuel D.
Article

Comparing the calculated fermi level splitting with the open-circuit voltage in various perovskite cells

ACS Energy Letters, v. 4, (4), April 2019, p. 855-860
Guo, Dengyang; Caselli, Valentina M.; Hutter, Eline M.; Savenije, Tom J.
Article

Reversible Removal of Intermixed Shallow States by Light Soaking in Multication Mixed Halide Perovskite Films

ACS Energy Letters, v. 4, (10), October 2019, p. 2360-2367
Guo, Dengyang; Andaji Garmaroudi, Zahra; Abdi-Jalebi, Mojtaba; Stranks, Samuel D.; Savenije, Tom J.
Article

The importance of relativistic effects on two-photon absorption spectra in metal halide perovskites

Nature Communications, v. 10, (1), 25 November 2019, article number 5342
Wei, Zimu; Guo, Dengyang; Thieme, Jos; Katan, Claudine; Caselli, Valentina M.; Even, Jacky; Savenije, Tom J.
Article

Vacuum-Deposited 2D/3D Perovskite Heterojunctions

ACS Energy Letters, v. 4, (12), 13 December 2019, p. 2893-2901
La-Placa, Maria-Grazia; Gil-Escrig, Lidón; Guo, Dengyang; Palazon, Francisco; Savenije, Tom J.; Sessolo, Michele; Bolink, Henk J.
Article

2018 4

Can we use time-resolved measurements to get steady-state transport data for halide perovskites?

Journal of Applied Physics, v. 124, (10), September 2018, article number 103103
Levine, Igal; Gupta, Satyajit; Bera, Achintya; Ceratti, Davide; Hodes, Gary; Cahen, David; Guo, Dengyang; Savenije, Tom J.; Ávila, Jorge; Bolink, Henk J.; Millo, Oded; Azulay, Doron; Balberg, Isaac
Article

How Charge Dynamics Change in Mixed Halide Perovskites on Light Soaking

Guo, Dengyang; Garmaroudi, Zahra; Stranks, Samuel; Savenije, Tom
Conference paper

How the Dynamics of Charge-Carriers Change on Light Soaking in Mixed Halide Perovskites

Guo, Dengyang
Conference paper

Reduction of non-Radiative Decay in Metal Halide Perovskites by light Soaking in Humid Air

Guo, Dengyang
Conference paper

2017 5

Dopant compensation in alloyed CH₃NH₃PbBr_3-xCl_x perovskite single crystals for gamma-ray spectroscopy

Nature Materials, v. 16, (8), 1 August 2017, p. 826-833
Wei, Haotong; Desantis, Dylan; Wei, Wei; Deng, Yehao; Guo, Dengyang; Savenije, Tom J.; Cao, Lei; Huang, Jinsong
Article

Metal Halide Perovskite Polycrystalline Films Exhibiting Properties of Single Crystals

Joule, v. 1, (1), 6 September 2017, p. 155-167
Brenes, Roberto; Guo, Dengyang; Osherov, Anna; Noel, Nakita K.; Eames, Christopher; Hutter, Eline M.; Pathak, Sandeep K.; Niroui, Farnaz; Friend, Richard H.; Islam, M. Saiful; Snaith, Henry J.; Bulović, Vladimir; Savenije, Tom J.; Stranks, Samuel D.
Article

Photoluminescence from Radiative Surface States and Excitons in Methylammonium Lead Bromide Perovskites

Journal of Physical Chemistry Letters, v. 8, (17), 7 September 2017, p. 4258-4263
Guo, Dengyang; Bartesaghi, Davide; Wei, Haotong; Hutter, Eline M.; Huang, Jinsong; Savenije, Tom J.
Article

Light-Induced Charge Carrier Dynamics in CH₃NH₃PbBr₃ Single Crystals

Guo, Dengyang
Conference paper

Structure Dependent Charge Carrier Dynamics in CH₃NH₃PbBr₃ Single Crystals

Guo, Dengyang
Conference paper

2016 1

Orientation Dependent Carrier Mobility in Perovskite Single Crystals

Guo, Dengyang
Conference paper

2015 1

Surface Plasmon Effect of Carbon Nanodots

Nanoscale, v. 7, (45), December 2015, p. 18908-18913
Guo, Dengyang; Shan, Chongxin; Liu, Kaikai; Lou, Qing; Shen, Dezhen
Article

2014 1

Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films

Scientific Reports, v. 4, December 2014, article number 7469
Guo, Dengyang; Shan, Chongxin; Qu, Songnan; Shen, Dezhen
Article

Research Interest

Publications

2023 1

2022 1

2021 2

2020 3

2019 5

2018 4

2017 5

2016 1

2015 1

2014 1

Conference paper 1

Article 1

Article 2

Article 2

Conference paper 1

Article 5

Article 1

Conference paper 3

Article 3

Conference paper 2

Conference paper 1

Article 1

Article 1

2018 4

2017 5

2016 1

2015 1

2014 1

Teaching Assignment

Projects

From January 2022 to December 2024

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