Review
Chemistry, Physical
Dheeraj Devadiga, M. Selvakumar, Prakasha Shetty, M. S. Santosh
Summary: Dye-sensitized solar cells are an efficient method of converting energy and have the potential to be a future energy source. Integration with rechargeable energy storage systems has addressed the issue of power output in photovoltaic conversion systems.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Electrical & Electronic
Mehdi Ismail, Celine Olivier, Thierry Toupance
Summary: Anatase TiO2 photoanodes were modified with hydrothermally synthesized WO3 nanorods for DSSC applications. Two configurations were investigated, where the addition of WO3 nanorods in the TiO2 matrix showed better performance for front illumination, while the undercoat of WO3 nanorods on FTO substrate showed better performance for back illumination. The excellent electron mobility and specific nanorod shape of WO3 contributed to charge trapping and injection, reducing recombination and dark current, while the scattering nature of the WO3 nanorods undercoat was beneficial for light harvesting.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
S. Vibavakumar, K. D. Nisha, V. S. Manikandan, J. Archana, M. Navaneethan, S. Harish
Summary: This work aims to improve the photovoltaic parameters in DSSCs by introducing a bilayer photoanode composed of Nb2O5 and TiO2. The microstructural, crystalline, and morphological properties of the Nb2O5/TiO2 bilayer were analyzed. The charge transfer processes and electron behavior in the bilayer photoanode were investigated, showing significantly lower charge transfer resistance and improved electron lifetime.
Review
Polymer Science
N. Ruba, Pooja Prakash, S. Sowmya, B. Janarthana, A. Nagamani Prabu, J. Chandrasekaran, T. Alshahrani, H. Y. Zahran, I. S. Yahia
Summary: Photovoltaic cells can directly convert sunlight into electricity, and developing low-cost, high-efficiency solar cells is essential for the widespread adoption of solar energy. Dye Sensitized Solar Cells (DSSC) are attractive due to their cost-effectiveness and ease of fabrication. Researchers have extensively studied the basic components of DSSC to optimize performance, including the use of different photo anodes, dyes, counter electrodes, and encapsulated materials.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Engineering, Chemical
Li-Jiao Ma, Jia-Bin Shi, Gang Wang, Zi-Zhuo Fu, Yang-Hong Wu, Bing-Xin Lei, Zhen-Fan Sun
Summary: The study successfully developed a mirror-like NiCo2S4/TiO2 CE with high reflectance ability, which can achieve a higher photoelectric conversion efficiency in DSSCs compared to traditional Pt CE.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Bandana Ranamagar, Isaac Abiye, Fasil Abebe
Summary: The Rhodamine-6G derivative Rhd and its metal complexes with aluminum and chromium ions were synthesized and characterized using UV-vis and fluorescence spectroscopy. Dye-sensitized solar cells (DSSCs) were fabricated with Rhd and the metal complexes, and their solar-to-electric power efficiencies were determined through current-density measurements and Electrochemical Impedance Spectroscopy (EIS). The Rhd and Cr3+-sensitized solar cell showed the highest solar to electric power efficiency at 0.16%.
Article
Energy & Fuels
Hsueh-Tao Chou, Shi-Ting Chen, Chun-Hsin Wang, Ho-Chun Hsu, Tin-Yao Kao, Zi-Heng Lin
Summary: In this study, the working electrode of DSSCs was successfully modified using a TTG stacked structure, resulting in an efficiency 46.25% higher than that of the pure TiO2 working electrode.
IEEE JOURNAL OF PHOTOVOLTAICS
(2021)
Article
Optics
S. Sowmya, Pooja Prakash, N. Ruba, A. Nagamani Prabu, B. Janarthanan, Vasudeva Reddy Minnam Reddy, H. H. Hegazy
Summary: This study attempted to use non-nano-sized TiO2 instead of nano-sized TiO2 in dye-sensitized solar cells, with Amaranthus and Henna leaves chosen as sensitizers. UV-vis and FTIR spectroscopic studies were conducted to understand the absorption range and functional groups of the dyes. The J-V characteristic study showed diode characteristics rather than solar cell characteristics.
Article
Chemistry, Physical
M. Gomathi, A. Sankar, S. Kannan, Mohd. Shkir, Vasudeva Reddy Minnam Reddy
Summary: In this study, a photoelectrochemical system based on low-cost carbon black and tin selenide composite material was proposed. The physicochemical properties of the composite were analyzed, revealing its excellent electrocatalytic and charge transport properties in the solar cell. Compared to the platinum counter electrode, the DSSC with the composite material showed significantly improved performance.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Green & Sustainable Science & Technology
Xiaodan Zhang, Lei Lei, Xinpeng Wang, Degao Wang
Summary: The collection of solar energy in chemical bonds via dye-sensitized photoelectrosynthesis cells (DSPECs) is a reliable solution. Atomic layer deposition (ALD) was used to introduce ultrathin blocking layers (BLs) between a mesoporous TiO2 membrane and fluorine-doped tin oxide (FTO), resulting in improved water oxidation performance. The ALD-prepared layers greatly hindered the recombination of photogenerated electron-hole pairs in the TiO2-based photoanode, enhancing water oxidation efficiency. This study provides critical backing for effective water splitting using molecular films prepared by the ALD technique.
Article
Energy & Fuels
Abdullah Atilgan, Abdullah Yildiz
Summary: The development of novel bilayer photoanodes is crucial for efficient dye-sensitized solar cells. In this study, a homojunction photoanode consisting of undoped and Ni-doped TiO2 layers was prepared. By tuning the location of the doped layer, the photoconversion efficiency was greatly improved. The bilayer structure enhanced light absorption, resulting in increased short circuit current and open-circuit voltage.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
K. Pugazhendhi, B. Praveen, D. J. Sharmila, J. Sahaya Selva Mary, P. Naveen Kumar, V. Bharathilenin, J. Merline Shyla
Summary: This study investigated the effect of infusing aluminium plasmons into titania/zinc oxide nanocomposite photoanode on the efficiency of novel plasmonic Dye-Sensitized Solar Cells. The TAZ nanocomposite exhibited enhanced photoconduction and light harvesting capability without significant changes in crystallographic and morphological properties. By utilizing surface plasmon modes, TAZ showed strong emissions in the visible spectrum, resulting in improved photoconductivity and efficiency compared to TZ.
Article
Nanoscience & Nanotechnology
Muhammad Shakeel Ahmad, Nasrudin Abd Rahim, Syed Shahabuddin, Shahid Mehmood, Adnan Daud Khan
Summary: This study focuses on the synthesis of PANi nano-rods and the investigation of WS2 nanosheets on its electronic and catalytic properties. The results show that specimens containing 5wt% of WS2 exhibited higher incident photo conversion efficiency.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Chemistry, Physical
Hannes Michaels, Marina Freitag
Summary: This study evaluates the TiO2 blocking layer in dye-sensitized solar cells using transient photovoltage and electrochemical impedance analysis, and demonstrates a feasible method for assessing the performance of TiO2 blocking layers.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Swathi Ippili, Venkatraju Jella, Jaegyu Kim, Seungbum Hong, Soon-Gil Yoon
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Sri Venkata Narayana Pammi, Van-Dang Tran, Reddeppa Maddaka, Ji-Ho Eom, Jang Su Jung, Hyeon-Myeon Jeong, Moon-Deock Kim, Vincenzo Pecunia, Soon Gil Yoon
ADVANCED OPTICAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Cheng-Fan Xiao, Jong Heon Kim, Su-Ho Cho, Yun Chang Park, Min Jung Kim, Kwun-Bum Chung, Soon-Gil Yoon, Ji-Won Jung, Il-Doo Kim, Hyun-Suk Kim
Summary: In this study, a novel ensemble design for TF-ASSBs was proposed to achieve high performance and long lifespan. The use of new methods for handling the cathode and anode-electrolyte interface provides important insights for future research.
Article
Materials Science, Multidisciplinary
Van-Hoang Vuong, S. V. N. Pammi, Kedhareswara Sairam Pasupuleti, Weiguang Hu, Van Dang Tran, Jang Su Jung, Moon-Deock Kim, Vincenzo Pecunia, Soon Gil Yoon
Summary: Lead-free perovskite-inspired materials (PIMs) have shown promising electronic properties without the toxicity issues of lead-based perovskites, but have not matched the efficiency and stability of benchmark technologies in photodetectors. This study demonstrates the potential of high-performance self-powered photodetectors using a two-tube chemical vapor deposition (2T-CVD) approach to grow smoother and more compact photoactive films of methylammonium bismuth iodide (MA(3)Bi(2)I(9)). The results show that 2T-CVD offers a promising platform for the development of high-performance lead-free perovskite-inspired optoelectronics with improved efficiency and stability.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Alphi Maria Thomas, Chongsei Yoon, Swathi Ippili, Venkatraju Jella, Tae-Youl Yang, Giwan Yoon, Soon-Gil Yoon
Summary: Recent studies have focused on developing high-performance, flexible ultraviolet photodetectors using environmentally friendly zinc-aluminum layered double hydroxide. The experiments demonstrated exceptional performance of UV PDs without passivation, and further improvement with the addition of PDMS passivation. The study also investigated the effect of ambient atmosphere on PD performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Swathi Ippili, Bongwon Kim, Venkatraju Jella, Jang-Su Jung, Van-Hoang Vuong, Soon-Gil Yoon
Summary: This study demonstrates the use of eco-friendly and highly transparent PTFE-coated silicon oxide films as antireflective and antibacterial coatings for smartphone panels. These coatings enhance the hydrophobic properties of the films without affecting their antibacterial activity and mechanical durability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Hee-Yun Jung, Eun Sung Oh, Dong Jun Kim, Hongjae Shim, Wonjong Lee, Soon-Gil Yoon, Jongchul Lim, Jae Sung Yun, Taek-Soo Kim, Tae-Youl Yang
Summary: To protect perovskite solar cells (PSCs) from degradation and ensure long-term stability, an effective encapsulation technology is developed using thermocompression bonding. The bonding between perovskite layers and charge transport layers offers an excellent lamination method, leading to larger grains and smoother interfaces, reducing defect density and suppressing ion migration and phase segregation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Chongsei Yoon, Swathi Ippili, Alphi Maria Thomas, Batzorig Buyantogtokh, Seungbum Hong, Venkatraju Jella, Van-Dang Tran, Soon-Gil Yoon
Summary: In this study, a stretchable flexoelectric-piezoelectric nanogenerator (FPENG) composed of a zinc-aluminum layered double hydroxide nanosheets-ZnO nanorods heterostructure is developed. The coupling of the flexoelectric and piezoelectric effects enhances the output performance of the FPENG, which can also self-charge.
ACS ENERGY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Kedhareswara Sairam Pasupuleti, Alphi Maria Thomas, Devthade Vidyasagar, Vempuluru Navakoteswara Rao, Soon-Gil Yoon, Young-Heon Kim, Song-Gang Kim, Moon-Deock Kim
Summary: In this study, a surface acoustic wave (SAW) sensor based on ZnO@MXene hybrid heterostructure was developed for ultrahigh NH3 gas detection under UV illumination at room temperature. The sensor exhibited enhanced frequency response, improved selectivity, low detection limit, short response/recovery times, long-term stability, and robust sensitivity under various relative humidity conditions. These unique NH3 sensing properties were attributed to the enriched functional groups, oxygen vacancies, and excellent charge transfer at the Schottky barrier via band bending. This study provides strategic insights for designing light-activated high-performance SAW-based NH3 sensors in safety assurance and environmental monitoring.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Jong Heon Kim, Jun-Seob Park, Su-Ho Cho, Ji-Min Park, Jong Seok Nam, Soon-Gil Yoon, Il-Doo Kim, Ji-Won Jung, Hyun-Suk Kim
Summary: Efforts have been made to stabilize the surface of Ni-rich cathodes for Li-ion batteries through the introduction of protective layers such as aluminum oxide (Al2O3). In this study, a facing-target sputtering (FTS) method was used to create a dense and homogeneous ultrathin Al2O3 layer on the surface of NCM811, resulting in the elimination of LiOH byproduct and improved performance. The findings highlight the importance of selecting an appropriate technique for achieving surface passivation and enhancing cycling performance of Ni-rich cathodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Swathi Ippili, Venkatraju Jella, Jeong Min Lee, Jang-Su Jung, Dong-Hyun Lee, Tae-Youl Yang, Soon-Gil Yoon
Summary: In this study, anti-reflective, hydrophobic, antimicrobial zinc oxide-polytetrafluoroethylene (ZnO-PTFE) composite thin films with sensorial capabilities were developed, and an antimicrobial self-powered touch sensor based on these composite films was demonstrated. These films exhibited low refractive index, high transmittance, excellent antibacterial properties, and water stability. The potential applications of these coatings in interactive devices for a safer experience were highlighted.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Swathi Ippili, Venkatraju Jella, Alphi Maria Thomas, Chongsei Yoon, Jang-Su Jung, Soon-Gil Yoon
Summary: Layered double hydroxides (LDHs) have been extensively studied for various applications, including drug delivery, energy storage, catalysis, and luminescence. This study describes a ZnAl-CO3-LDH-poly(vinylidene fluoride) (ZnAl-LDH-PVDF) composite material, which exhibits high performance as a flexible and transparent triboelectric nanogenerator (TENG). The composite material shows excellent output performance and can function effectively as a self-powered pressure and humidity sensor.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Electrical & Electronic
Hyung-Jin Choi, Sang-Young Seo, Jang-Su Jung, Soon-Gil Yoon
Summary: An environmentally friendly smartphone panel glass with high transparency, strong antibacterial activity, resistance to water and acidic water, and hydrophobicity without a protective layer was demonstrated in this study. The glass showed similar transmittance to that of glass after being dipped in water or acidic water for 10 days, with strong antibacterial activity against E. coli and S. aureus.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Swathi Ippili, Venkatraju Jella, Seongmun Eom, Seungbum Hong, Soon-Gil Yoon
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Engineering, Electrical & Electronic
Venkatraju Jella, Swathi Ippili, Soon-Gil Yoon
ACS APPLIED ELECTRONIC MATERIALS
(2020)
