Laboratory of Energy Materials and Devices

Mission:

Development and application of new materials, nanostructured materials for energy conversion and storage, and other related fields

Main research direction:

- Fabrication and characterization of new materials, nanostructured materials: carbon nanotubes, graphene, metal nanomaterials, 2D materials (MoS2, hBN, etc), semiconductor oxide materials (TiO2, ZnO, SnO2, BiVO4, etc.), ion exchange and storage materials ((LixM1-xMn2O4 (M=Ni, V, Co, etc), LiLaTiO3, etc))

- Development and fabrication of energy conversion and storage devices (solar cell, ion batteries, photoelectrochemical, sensors, detectors, fuel cells, etc)

- Development and application of new materials, nanostructured materials, and carbon nanomaterials for energy conversion and storage, photo-electrochemical sensors, photocatalysis, electronic and biomedical.

Laboratory Head: Assoc. Prof. Dr. Pham Duy Long Email: longpd@ims.(*) - replace (*) = vast.ac.vn Telephone: (84) 902064909

MEMBERS

ACHIEVMENTS

- By thermal CVD method, single-walled CNTs, double-walled CNTs, graphene, graphene/CNTs, CNTs/MoS2, and graphene/MoS2 materials were successfully fabricated on copper and SiO2/Si substrates.

- Application of graphene, graphene/CNTs material in electrochemical sensor for detection of toxic substances (glyphosate, carbaryl, and other heavy ion metals such as arsenic, lead, etc).

- Preparing solar panels of PEDOT:PSS/GO-AuNPs hybrid material. The power conversion efficiency (PCE) of the n-Si/ PEDOT:PSS/GO-AuNPs hybrid solar cell was 8.39% and is higher than pristine  PEDOT:PSS (5.81%) and PEDOT:PSS/GO (7.58%).

- Preparing 2D Au-plasmonic/BiVO4/TiO2/CoNiOH multilayer heterostructure material for photoanode electrode in photoelectrochemical devices for separating H2 from water (PEC) with efficiency of 1.5%.

Fig. 1. (a) HRTEM image of SWCNTs and DWCNTs, (b) AFM image of graphene/SiO2, (c) Principle of fabrication of the DWCNTs-Gr hybrid thin film and using it as electrochemical electrode structure for detection of As(V)

Fig. 2. Schematic view of the preparation process, energy diagram, light illumination and dark J-V characteristics of n-Si/PEDOT:PSS/GO-AuNPs

SELECTED PUBLICATIONS

1. Nguyen Thi Huyen, Tran Ai Suong Suong, Cao Thi Thanh, Pham Van Trinh, Nguyen Van Tu, Bui Hung Thang, Tran Van Hau, Pham Thanh Binh, Vu Duc Chinh, Pham Van Hai, Vu Xuan Hoa, Tran Van Tan, Phan Ngoc Minh, Hiroya Abe, and Nguyen Van Chuc, A new and facile preparation of 3D urchin-like TiO2@ graphene core@ shell SERS substrates for photocatalytic degradation of RhB, Materials Advances, 6 (2025) 2691-2700; https://doi.org/10.1039/D5MA00040H
2. Cao Thi Thanh, Nguyen Thi Huyen, Pham Van Trinh, Nguyen Van Tu, Vu Thi Thu, Vu Cam Tu, Dao Ngoc Nhiem, Pham Thanh Binh, Nguyen Ngoc Anh, Vu Xuan Hoa, Phan Ngoc Minh, Hiroya Abe, Nguyen Van Chuc, 3D bloom-like GrNFs/DWCNTs-CeO2NPs porous film for development of electrochemical malathion sensor, Diamond and Related Materials 152 (2025) 111889; https://doi.org/10.1016/j.diamond.2024.111889
3. Nguyen Thi Huyen, Luong Truc Quynh Ngan, Le Thi Quynh Xuan, Tran Ai Suong Suong, Cao Thi Thanh, Nguyen Van Tu, Pham Thanh Binh, Tran Van Tan, Nguyen Viet Tuyen, Dao Tran Cao, Pham Van Hai, Vu Xuan Hoa, Nguyen Van Chuc, Reduced graphene oxide-carbon nanotubes nanocomposites-decorated porous silver nanodendrites for highly efficient SERS sensing, Optical Materials, 162 (2025) 116935; https://doi.org/10.1016/j.optmat.2025.116935
4. The-Hung Mai, Huy-Binh Do, Long Duy Pham, Thien Xuan Phan, Wei-Zhi Chen, Liang-Wei Lan, Hung-Ju Lin, Van-Hung Nguyen, Chung-Li Dong, Alagarsamy S K Kumar, Ahmed F M El-Mahdy, Hyeonseok Lee, Dinh Khoi Dang, Dai-Viet N Vo, Li-Wei Tu, Chien-Cheng Kuo, Hung-Duen Yang  and Phuong V Pham; Efficient photoanode with a MoS2/TiO2/Au nanoparticle heterostructure for ultraviolet-visible photoelectrocatalysis; Nanotechnology 35 (2024) 385703; DOI 10.1088/1361-6528/ad5aa0
5. Dong C. Nguyen, Tomoki Asada, Itaru Raifuku, and Yasuaki Ishikawa, Analysis and Selection of Optimal Perovskite/Silicon Tandem Configuration for Building Integrated Photovoltaics Based on Their Annual Outdoor Energy Yield Predicted by Machine Learning; Sol. RRL 8 (2024) 2400072; https://doi.org/10.1002/solr.202400072
6. Maria Caterina Giordano, Long Duy Pham, Giulio Ferrando, Hieu Si Nguyen, Chi Ha Le, The-Hung Mai, Giorgio Zambito, Matteo Gardella, and Francesco Buatier de Mongeot. Self-Organized Plasmonic Nanowire Arrays Coated with Ultrathin TiO2 Films for Photoelectrochemical Energy Storage, ACS Appl. Nano Mater. 6 (2023) 21579-21586; https://doi.org/10.1021/acsanm.3c03546
7. Pham Van Trinh, Nguyen Ngoc Anh, Ngo Thi Bac, Cao Tuan Anh, Nguyen Van Hao, Le Ha Chi, Bui Hung Thang, Nguyen Van Chuc, Phan Ngoc Minh, Naoki Fukata, Enhanced effciency of silicon micro-pyramids/poly (3,4-ethylenedioxythiophene):polystyrene sulfonate/gold nanoparticles hybrid solar cells, Materials Science in Semiconductor Processing, 137 (2022) 106226; https://doi.org/10.1016/j.mssp.2021.106226
8. Van Tu Nguyen, Van Chuc Nguyen, Van Hau Tran, Ji-Yong Park, Growth of bilayer MoS2 flakes by reverse flow chemical vapor deposition, Materials Letters, 346 (2023) 134553; https://doi.org/10.1016/j.matlet.2023.134553
9. Phan Nguyen Duc Duoc, Nguyen Hai Binh, Tran Van Hau, Cao Thi Thanh, Pham Van Trinh, Nguyen Viet Tuyen, Nguyen Van Quynh, Nguyen Van Tu, Vu Duc Chinh, Vu Thi Thu, Pham Duc Thang, Phan Ngoc Minh and Nguyen Van Chuc, A novel electrochemical sensor based on double-walled carbon nanotubes and graphene hybrid thin film for arsenic(V) detection, Journal of Hazardous Materials, 400 (2020) 123185; https://doi.org/10.1016/j.jhazmat.2020.123185

FACILITIES

1. Electron beam evaporation device, thermal evaporation device (YBH: Soviet Union); (VHD, Germany).
2. Thermal CVD device: temperature, time and gas flow can be controlled automatically. Operating temperature range (25-1000 oC); gases (CH4­, C2H2, H2, N2 and Ar)
3. Electrochemical measuring devices: AUT302N W Metrohm, and Dropsens µstat -i400.
4. Monochromatic light source device: TLS130B-300X, Newport
5. Quantum performance measuring device: IQE-200B, Oriel/Newport
6. Solar cell characteristic measurement equipments: solar simulator, I-V characteristic measurement system (Keithley 2400)
7. UV-Vis spectrophotometer equipment (UV 1800, China)
8. Glove box designed for ultra-clean environments Model: EQ-VGB-6-LD
9. Fume hood, sample oven, ultrasonic vibrator, magnetic stirrer, etc.