Article
Chemistry, Physical
Jokotadeola A. Odutola, Horatiu Szalad, Josep Albero, Hermenegildo Garcia, Nikolai V. Tkachenko
Summary: New insights into the improved photo(electro)catalytic activity of graphene by heteroatom doping were explored. N-doped graphene exhibited stronger absorption signals, longer response lifetime, and different dielectric function spectra compared to undoped graphene, which was attributed to electron trapping at doping centers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Sara Ajmal, Aamir Rasheed, Ngoc Quang Tran, Xiaodong Shao, Yosep Hwang, Viet Q. Bui, Young Dok Kim, Jeongyong Kim, Hyoyoung Lee
Summary: This study demonstrates the successful activation and stabilization of N2 adsorption in the photocatalytic nitrogen fixation process using an electron-deficient boron-doped carbon nitride catalyst. By tuning the bandgap of the carbon nitride, polarizing the adsorbed N2 through electron pair acceptance, and activating the N2 through pi-back donation, the BCN-4 catalyst shows high performance in the synthesis of ammonia. The findings provide insights into improving the photocatalytic efficiency of nitrogen fixation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Materials Science, Multidisciplinary
Salam Obaid Abdulghani, Ethar Yahya Salih, Abubaker Sabbar Mohammed
Summary: In this study, tin oxide (SnO2) and Germanium dioxide (GeO2) doped SnO2/porous silicon (Si) films were fabricated for ultraviolet photodetector application. The addition of GeO2 increased the optical bandgap and improved the photo-current response of the SnO2 photodetector. The proposed geometry showed robustness and stability, providing a cost-effective approach for optoelectronic systems.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Herman Heffner, Marcos Soldera, Andres Fabian Lasagni
Summary: This study presents a method of surface modification of fluorine-doped tin oxide using picosecond infrared direct laser interference patterning. The surface texture can significantly enhance the light-trapping capabilities of thin-film solar cells but may result in a partial deterioration of their electrical conductivity.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Physical
Mehdi Rouhani, Jonathan Hobley, Franklin Chau-Nan Hong, Yeau-Ren Jeng
Summary: This study explores the mechanism of how doping enhances the thermal stability of DLC films, showing that increasing the Si content can maximize the thermal stability of the films, while also revealing the correlation between Si doping and stability of mechanical properties at elevated temperatures.
Article
Biochemistry & Molecular Biology
Erik Cerrato, Alberto Privitera, Mario Chiesa, Enrico Salvadori, Maria Cristina Paganini
Summary: Due to its thermal stability, conductivity, high exciton binding energy and high electron mobility, zinc oxide is one of the most studied semiconductors in the field of photocatalysis. Doping the lattice with foreign atoms can introduce defects within the bandgap, making zinc oxide optically active in the visible range and reducing the energy required for photo-driven charge separation. This study demonstrates a green synthetic procedure for achieving high-level doping and highlights the importance of thermal treatment in selecting the nature of the defect and the material's capability for specific chemistry. The low-temperature treatments were found to produce material with higher efficiency in the water photosplitting reaction.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Xinzuo Fang, Yu Jiang, Kailong Zhang, Guang Hu, Weiwei Hu
Summary: The study demonstrates that a layer of ZIF-8 derived porous carbon coated membrane does improve the capacity and cycling stability, mainly attributed to physical adsorption (abundant porosity), chemical adsorption (fluorine and nitrogen doping) and even reuse of dissolved polysulfides by the modified membrane.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
A. Baset Gholizadeh, Conor Byrne, Alex S. S. Walton, Richard Smith, Jonathan England, Christopher Craig, Dan Hewak, Richard J. J. Curry
Summary: Seebeck measurement was conducted on n-type amorphous germanium telluride thin films (100 nm) containing oxygen and implanted with Bismuth (Bi) under dark and monochromatic light conditions from 1800 to 400 nm. The Bi-doped film showed a negative Seebeck coefficient indicating its n-type nature compared to the undoped p-type films. The Seebeck coefficient increased upon illumination with monochromatic light and exhibited distinctive behaviors in different spectral regions, which were caused by the inclusion of Bi ions as foreign impurities.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Jiaqian Yin, Zeyu Xu, Ziwei Xiao, Haibo Shao, Jianming Wang
Summary: A high-performance porous Si@Sn composite material was successfully synthesized using a photo electrochemical deposition strategy, showing excellent lithium storage performance under optimized conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Teng Wang, Xin Xu, Wenhui Li, Yuheng Li, Qian Liu, Chang'an Li, Chengwei Shan, Gongqiang Li, Tingting Shi, Aung Ko Ko Kyaw
Summary: This study demonstrates that organic cation formamidinium (FA) doping can simultaneously enhance carrier concentration, electrical conductivity, and phase stability in CsSnI3 films. This finding is crucial for improving the thermoelectric performance of tin-based halide perovskites.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Joerg Horzel, Sebastian Mack, Ioan Voicu Vulcanean, Karin Zimmermann, Sebastian Pingel, Wolfram Kwapil, Felix Maischner, Hannes Hoeffler, Sattar Bashardoust, Dirk Wagenmann, Johannes Greulich, Johannes Seif, Anamaria Steinmetz, Jochen Rentsch
Summary: Industrial mass production of solar cells is shifting towards carrier-selective junction solar cells with passivating contacts. The use of Ga-doped p-type Cz-Si material is still a viable option and offers the advantage of lower wafer costs.
Article
Chemistry, Multidisciplinary
Shin-ichi Naya, Hisayoshi Yoshioka, Hiroaki Tada
Summary: In this study, Sn nanoparticles generated on fluorine-doped tin oxide act as an efficient electrocatalyst for the CO2 reduction reaction, allowing for the stable production of synthetic gas from water and carbon dioxide. The addition of ammonium ions significantly enhances the reaction rate.
CHEMICAL COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Mohd. Shkir, Thamraa Alshahrani
Summary: Pure and Yttrium (Y) doped Bi2S3 thin films were synthesized using a simple and low-cost nebulizer spray pyrolysis (NPS) method. XRD analysis confirmed the orthorhombic Bi2S3 crystal structure with a dominant (130) plane orientation. XPS analysis revealed the presence of Bi, S, and Y elements in the Bi2S3:Y1% sample. Photoluminescence and UV-Vis measurements indicated enhanced emission intensity, absorption capacity, and decreased optical band gap for the 1% Y doped Bi2S3 thin film, making it suitable for photo-sensing applications. Photo-sensing experiments demonstrated high responsivity, detectivity, and external quantum efficiency values for the 1% Y doped Bi2S3 thin film. Overall, this study highlights the potential of the 1% Y doped Bi2S3 thin film as a future photo-sensing device.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Multidisciplinary Sciences
Yutao Dong, Mehrdad Abbasi, Jun Meng, Lazarus German, Corey Carlos, Jun Li, Ziyi Zhang, Dane Morgan, Jinwoo Hwang, Xudong Wang
Summary: Amorphous titanium dioxide (TiO2) film coating by atomic layer deposition (ALD) is a promising strategy to extend the photoelectrode lifetime for solar fuel generation. In this work, it is revealed that residual chlorine (Cl) ligands are detrimental to the silicon (Si) photoanode lifetime. Post-ALD in-situ water treatment effectively improves the film stoichiometry and preserves the amorphous phase, leading to a substantially improved lifetime for the protected Si photoanode.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Dan Shan, Daoyuan Sun, Mingjun Tang, Ruihong Yang, Guangzhen Kang, Tao Tao, Yunqing Cao
Summary: The transportation properties of Boron-doped Si nanocrystals embedded in amorphous SiC films were investigated by studying the temperature-dependent Hall effect measurements. With increasing Si/C ratio, the Hall mobilities, carrier concentrations, and conductivities in the films all showed an upward trend, reaching maximum values of 7.2 cm²/V, 4.6 x 10¹⁹ cm⁻³, and 87.5 S • cm⁻¹ respectively. Different carrier transport behaviors were identified within different temperature ranges in the films of various Si/C ratios.
Article
Physics, Multidisciplinary
Seung Jae Baik
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2015)
Article
Optics
Young Jin Jeong, Jihoon Jang, Jung Hoon Song, Hyekyoung Choi, Sohee Jeong, Seung Jae Baik
JOURNAL OF THE OPTICAL SOCIETY OF KOREA
(2015)
Article
Energy & Fuels
Jihoon Jang, Jung Hoon Song, Hyekyoung Choi, Seung Jae Baik, Sohee Jeong
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2015)
Article
Physics, Applied
Sang Jung Kang, Jin-Wan Jeon, Seung Jae Baik, Koeng Su Lim
APPLIED PHYSICS LETTERS
(2013)
Article
Materials Science, Multidisciplinary
Jihoon Jang, Minjin Kim, Yangdoo Kim, Kyungmin Kim, Seung Jae Baik, Heon Lee, Jeong Chul Lee
CURRENT APPLIED PHYSICS
(2014)
Article
Electrochemistry
Nguyen Trung Hieu, Seung Jae Baik, Yongseok Jun, Minoh Lee, Ok Hee Chung, Jun Seo Park
ELECTROCHIMICA ACTA
(2014)
Article
Physics, Applied
Jun Kwan Kim, Jung Hoon Song, Hyekyoung Choi, Seung Jae Baik, Sohee Jeong
JOURNAL OF APPLIED PHYSICS
(2014)
Article
Green & Sustainable Science & Technology
Dae Young Jeong, Kyungmin Kim, Hee-eun Song, Jinsoo Song, Seung Jae Baik, Jeong Chul Lee
Article
Green & Sustainable Science & Technology
Seung Jae Baik, Yongmin Lee, Koeng Su Lim, Keun-Taek Kim
Article
Energy & Fuels
T. Lanz, L. Fang, S. J. Baik, K. S. Lim, B. Ruhstaller
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2012)
Article
Materials Science, Multidisciplinary
Nguyen Trung Hieu, Seung Jae Baik, Ok Hee Chung, Jun Seo Park
Article
Materials Science, Multidisciplinary
Liang Fang, Seung Jae Baik, Koeng Su Lim
Article
Engineering, Electrical & Electronic
Yong-Hoon Son, Seung Jae Baik, Myounggon Kang, Kihyun Hwang, Euijoon Yoon
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE
(2014)
Article
Materials Science, Multidisciplinary
Yong-Hoon Son, Sangsoo Lee, Kihyun Hwang, Seung Jae Baik, Euijoon Yoon
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2013)
Article
Nanoscience & Nanotechnology
Jihyun Moon, Seung Jae Baik, Byungsung O, Jeong Chul Lee
NANOSCALE RESEARCH LETTERS
(2012)