Article
Energy & Fuels
Seungyoon Seok, Gyuho Shin, Hyojung Jung, Jieun Lee, Burragoni Sravanthi Goud, Ganesh Koyyada, Jae Hong Kim
Summary: In this study, the newly developed DACE technique was used to achieve panchromatic absorption in solid state DSSC. The TVP208 sensitized working electrode and DPP13 based DACE electrode showed complementary absorption nature, leading to an efficiency of 5.08% in the SS-DSSC device. The improved efficiency of DACE based devices can be attributed to the enhanced light harvesting property.
Article
Energy & Fuels
Aycan Atli, Abdullah Yildiz
Summary: An opaque platinum film as a counter electrode in dye-sensitized solar cells demonstrates enhanced reflectivity, smaller resistance, and excellent adhesion properties. As a result, the DSSC with the opaque platinum film achieves a higher electrical power conversion efficiency compared to the transparent platinum film under the same conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Polymer Science
Ravi Prakash, Santanu Das, Pralay Maiti
Summary: Functionalization of multi-walled carbon nanotubes (CNTs) was conducted to obtain CNT-tagged polyurethane (PU-CNT) through ultrasonication, chemical attachment, and chain extension. Spectroscopic techniques confirmed the functionalization of CNTs and polymer and thermal measurements revealed improved thermal stability and conductivity. Quantum dots of CuInS2 were synthesized and characterized for potential use in solar cells. Solar cell devices with Au as counter electrode achieved an enhanced power conversion efficiency of 0.81% due to reduced electron-hole pair recombination and improved hole transportation.
Article
Nanoscience & Nanotechnology
Xiangyang Zeng, Qiang Luo, Jinyang Li, Yilan Li, Wei Wang, Yunhong Li, Ronggen Wu, Duo Pan, Gang Song, Jianbao Li, Zhanhu Guo, Ning Wang
Summary: In this study, a mixed ternary pentlandite Ni3Co6S8 is reported as an efficient multifunctional counter electrode for sensitized solar cells (SSCs). Ni3Co6S8 shows good catalytic activity and compatibility with various redox mediators, ensuring good performance preservation for SSCs. This work highlights the potential of pentlandites for high efficiency and stable SSCs.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Pooja A. Mithari, Avinash C. Mendhe, Swapnil S. Karade, Babasaheb R. Sankapal, Sujata R. Patrikar
Summary: The simple chemical bath deposition method successfully prepared MoS2 nanoflakes/MWCNTs thin-film composite material as the counter electrode in DSSCs, significantly increasing the photovoltaic conversion efficiency. The synergistic effect of the two materials resulted in improved electrocatalytic activity and lower charge transfer resistance at the CE/electrolyte interface.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Fatima Santos, Carolina Hora, Dzmitry Ivanou, Adelio M. Mendes
Summary: Due to their high power conversion efficiency under indoor light, dye-sensitized solar cells (DSSCs) are considered a promising energy technology for future IoT devices and wireless sensors. Monolithic design DSSCs offer advantages in commercial production, such as straightforward processing, low cost, and compactness.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Subhash Chand Yadav, Alfa Sharma, Rupesh S. Devan, Parasharam M. Shirage
Summary: The influence of different counter electrode materials on the performance of TiO2 nanorod-based dye-sensitized solar cells (DSSCs) assembled with hibiscus dye was investigated. Carbon, graphite, and gold as counter electrode materials strongly affected the energy conversion efficiency of DSSCs. The introduction of a compact layer and the use of appropriate counter electrode materials can enhance the performance of the solar cells.
Article
Green & Sustainable Science & Technology
Nadia Shahzad, Lutfullah, Tahira Perveen, Diego Pugliese, Sirajul Haq, Nusrat Fatima, Syed Muhammad Salman, Alberto Tagliaferro, Muhammad Imran Shahzad
Summary: Efficiency, stability, and cost-effectiveness are the prime challenges in research of materials for solar cells. This study explores carbon nanotubes as alternative counter electrode materials for dye-sensitized solar cells (DSSCs) and discusses various classes of carbon nanotube-based counter electrode materials comprehensively. The properties associated with these materials are analyzed and compared. Additionally, this study includes a brief overview of materials for other components of DSSCs.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Inorganic & Nuclear
Pooja A. Mithari, Avinash C. Mendhe, Suraj R. Sankapal, Sujata R. Patrikar, Babasaheb R. Sankapal
Summary: Bi2Se3 nanoparticles were anchored on multiwalled carbon nanotubes using the SILAR method to create a nanohybrid composite electrode for dye-sensitized solar cell applications. The well-optimized composite showed superior performance compared to bare MWCNTs and Bi2Se3, thanks to the synergistic electrochemical active sites between Bi2Se3 and MWCNTs. The composite electrode also exhibited enhanced stability and efficient charge transfer in the DSSC.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
J. Luo, J. C. Liu, Z. Q. Zhao, S. H. Sun, Y. Zhu, Y. M. Hu
Summary: Orthogonal Cu3SnS4 (CTS) nano-crystals were synthesized, with Cu7S4 seeds forming first at 130 degrees C and orthorhombic CTS nano-crystals forming at 180 degrees C. Selenization at 500 degrees C for 20 minutes resulted in the formation of CTSXSe4-X, which showed good conductivity and electrocatalytic activity for I-3(-) reduction when used as counter electrodes in dye-sensitized solar cells. The optimal 1.7 μm thick CTSXSe4-X counter electrode achieved a power conversion efficiency of 7.57%.
Article
Chemistry, Physical
Abdullah Yildiz, Takwa Chouki, Aycan Atli, Moussab Harb, Sammy W. Verbruggen, Rajeshreddy Ninakanti, Saim Emin
Summary: Transition metal phosphides, particularly the Fe2P phase, show comparable solar-to-current conversion efficiency with platinum (Pt) as a counter electrode in dye-sensitized solar cells (DSSCs) while exhibiting improved stability, making them a promising Pt-free alternative for efficient DSSCs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
S. Monika, M. Mahalakshmi, N. Subha, M. Senthil Pandian, P. Ramasamy
Summary: A composite material of zero-dimensional graphene quantum dots anchored on reduced graphene oxide sheets was successfully synthesized and used as a counter electrode material for CdS quantum dot sensitized solar cells. The composite showed significantly improved power conversion efficiency for solar cells.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yonrapach Areerob, Chaowalit Hamontree, Phitchan Sricharoen, Nunticha Limchoowong, Sakchai Laksee, Won-Chun Oh, Kongsak Pattarith
Summary: A novel gamma-irradiated chitosan-doped reduced graphene-CuInS2 composite was used as the counter electrode to address the issues associated with traditional counter electrodes. It exhibited higher photovoltaic efficiency compared to a Pt-based device.
Article
Chemistry, Multidisciplinary
Belqasem Aljafari, Subbiah Vijaya, Arash Takshi, Sambandam Anandan
Summary: This study explores manganese dioxide (MnO2) and copper-doped manganese dioxide (Cu-MnO2) nanoparticles as candidates for the counter electrode (CE) material in dye-sensitized solar cells (DSSCs), aiming to provide low-cost alternatives to platinum (Pt). Experimental results show that DSSC devices fabricated with 10 wt% Cu-MnO(2) as CE exhibit better performance. The low-cost feature of using Cu-MnO(2) as CE is encouraging for further research in improving the efficiency of DSSCs with alternative CEs.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
John Peter Isaqu, Ragavendran Vnekatesan, Rajamanickam Nagalingam, Jeyanthinath Mayandi, Nithiananthi Perumal
Summary: The current research focuses on fabricating and demonstrating Pt-free dye-sensitized solar cells (DSSCs) and supercapacitor electrodes at a low cost. The study shows the superior electroconductivity and electrocatalytic behavior of the Bi2S3/MWCNT hybrid compared to pristine Bi2S3. The developed DSSC cell with a Bi2S3/MWCNT counter electrode achieves a power conversion efficiency of 4.8% and demonstrates potential for energy storage applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
A. S. Rasal, Y-H Chen, K. Dehvari, G. Getachew, P-J Tseng, K. Waki, S. Bela, J-Y Chang
Summary: This study reported the preparation of a gel electrolyte using XG and TiO2 NPs to improve the performance of QDSSCs, achieving higher photoconversion efficiencies and stability. XG exhibited thixotropic sol-gel transitions, and the incorporation of TiO2 NPs improved the ionic conductivity of the gel electrolyte, passivating surface trap states or acting as steric hindrance.
MATERIALS TODAY ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Girum Getachew, Chiranjeevi Korupalli, Akash S. Rasal, Worku Batu Dirersa, Mochamad Z. Fahmi, Jia-Yaw Chang
Summary: For the first time, red-emitting CsMgxPb1-xI3 quantum dots were prepared by doping with magnesium ions, showing excellent optical properties and outstanding biocompatibility. By encapsulating into PF127-Gd micelles, the bioavailability of the quantum dots was improved. Overall, this study proposes a novel strategy to enhance the optical properties, stability, and bioapplicability of quantum dots.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Biomedical
Novi Irmania, Khalilalrahman Dehvari, Jia-Yaw Chang
Summary: In this study, a new set of multifunctional chalcogenide quantum dots was synthesized via a one-pot microwave-assisted hydrothermal reaction, and their potential applications in dual-modal imaging and therapy were demonstrated.
JOURNAL OF BIOMATERIALS APPLICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Akash S. Rasal, Ting-Ying Lee, Pei-Yun Kao, Girum Gatechew, Aswandi Wibrianto, Worku Batu Dirersa, Anil Ghule, Jia-Yaw Chang
Summary: In this study, a simple and direct approach was used to develop high-quality counter electrode films for quantum dot-sensitized solar cells. By combining metallic copper chalcogenides with S, N dual-doped carbon sources, the resulting films demonstrated improved photovoltaic performance.
Article
Chemistry, Multidisciplinary
W. B. Dirersa, G. Getachew, C. -H Hsiao, A. Wibrianto, A. S. Rasal, C. -C. Huang, J. -Y. Chang
Summary: This study reported the ROS-mediated therapies of CuFeS2 nanoparticles, which showed good efficacy in photothermal, photodynamic, and chemodynamic therapies. Furthermore, the nanoparticles were used for drug delivery to enhance chemotherapy. The results demonstrated the potential of these nanoparticles as anticancer agents.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Aswandi Wibrianto, Girum Getachew, Worku Batu Dirersa, Akash S. Rasal, Chih-Ching Huang, Tzu-Chun Kan, Jungshan Chang, Jia-Yaw Chang
Summary: Clinical studies have shifted to multimodal therapy due to the complexity and unpredictability of malignant tumors. This study presents a one-pot microwave synthesis of highly fluorescent copper, nitrogen, and sulfur-doped carbon quantum dots (Cu,N,S-CQDs) with superior quantum yield and enhanced peroxidase-like activity. These Cu,N,S-CQDs were further biofunctionalized with glucose oxidase (GOx) and camptothecin (CPT) to form a multifunctional nanocatalyst for cancer therapy. The Cu,N,S-CQDs@GOx/CPT nanocatalyst demonstrated multiple therapeutic mechanisms, including chemodynamic therapy, gas therapy, starvation therapy, and chemotherapeutic mechanisms.
Article
Energy & Fuels
Rutuja A. Chavan, Gokul P. Kamble, Sarika B. Dhavale, Akash S. Rasal, Sanjay S. Kolekar, Jia-Yaw Chang, Anil Vithal Ghule
Summary: MXene composites with different metal oxides have shown good electrochemical performance and hinder restacking of MXene. In this study, nickel oxide@MXene (NO@MXene) composites with varying compositions were synthesized and used as an anode for a supercapacitor. The 15% NO@MXene composite electrode demonstrated the highest capacitance, and an all-solid-state asymmetric supercapacitor with 15% NO@MXene as the anode displayed good cyclic stability and high energy and power densities.
Article
Chemistry, Multidisciplinary
Yao-Sheng Cheng, Yu-Ting Wu, Sofiannisa Aulia, Ching-Cheng Chang, Mia Rinawati, Ting-Ying Lee, Jia-Yaw Chang, Ni Luh Wulan Septiani, Brian Yuliarto, Min-Hsin Yeh
Summary: A quantum dot-sensitized solar cell (QDSSC) with cobalt manganese sulfide (CMS) composites as counter electrodes (CE) exhibits improved activity and stability. By controlling the precursor ratio of Co and Mn, the bimetallic CMS can be adjusted to manipulate the Sn2- reduction activity. The optimized CMS CEs also demonstrate a high solar-to-electricity conversion efficiency of 5.88 +/- 0.19% under 100 mW cm-2 irradiation, indicating their superior reduction activity to Sn2-.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Livy Laysandra, Girum Getachew, Jai-Rui Chang, Jia-Yaw Chang, Yu-Cheng Chiu
Summary: Achieving polymer nanocomposites with improved elasticity and stable mechanical and fluorescence properties remains challenging. However, the grafting from method coupled with reversible fragment-added chain transfer polymerization shows promise for the preparation of flexible and fluorescent nanocomposite films.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
Worku Batu Dirersa, Girum Getachew, Aswandi Wibrianto, Akash S. Rasal, Vivek S. Gurav, Mochamad Zakki Fahmi, Jia-Yaw Chang
Summary: The development of multifunctional nano-therapies has improved cancer treatment by enhancing therapeutic performance and minimizing side effects. In this study, a drug-loaded nanocarrier was designed for multimodal cancer therapy using MoOxS2-x quantum dots. The nanocarrier demonstrated efficient catalytic activity for chemodynamic treatment, reactive oxygen species-mediated therapies, and photodynamic therapy. It also exhibited excellent drug-loading efficiency and biocompatibility, resulting in significant cancer cell death through various therapeutic mechanisms.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
Tzu-Chi Chiang, Jia-Yaw Chang, Tzung-Han Chou
Summary: This study successfully prepared stable nanoemulsions of curcumin by adjusting the HLBt using Tween 60. The addition of Tween 60 reduced the size of the nanoemulsions and improved their storage stability. Higher HLBt values resulted in higher encapsulation efficiency and enhanced remaining activity of curcumin.
Article
Nanoscience & Nanotechnology
Worku Batu Dirersa, Tzu-Chun Kan, Girum Getachew, Aswandi Wibrianto, Sonjid Ochirbat, Akash Rasal, Jungshan Chang, Jia-Yaw Chang
Summary: Iron-containing Fenton nanocatalysts have shown great potential for clinical use due to their effective antitumor activity and low toxicity. In this study, FeMnOx nanoparticles were synthesized using cation exchange to enhance Fenton reactions in the tumor microenvironment, leading to improved chemodynamic therapy and chemotherapy. The nanoparticles exhibited excellent therapeutic potential, as demonstrated in in vitro and animal studies.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Materials Science, Multidisciplinary
Girum Getachew, Aswandi Wibrianto, Akash S. Rasal, Shamsa Kizhepat, Worku Batu Dirersa, Vivek Gurav, Jia-Yaw Chang
Summary: This article presents an in-depth investigation of lead-free perovskite material quantum dots (LFPMs QDs) as photocatalysts. LFPMs show promising performance in various photocatalysis applications, including water splitting, CO2 reduction, pollutant degradation, and organic synthesis. The formation of heterojunction nanocomposites using LFPMs and co-catalysts or hole-transporting materials enhances their photocatalytic performance. The article also discusses the advantages and drawbacks of LFPMs photocatalysts and proposes future research directions.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Wulan Purnamasari, Titah Aldila Budiastanti, Aminatun Aminatun, Ulfa Rahmah, Sri Sumarsih, Jia-Yaw Chang, Mochamad Zakki Fahmi
Summary: The present study investigated the effect of graphene oxide in cellulose acetate-based composite nanofibers on the transdermal delivery of naproxen. The addition of graphene oxide promoted the production of nanofibers with smaller diameter, higher conductivity, and higher mechanical strength, resulting in higher naproxen release from the nanofibers. The composite nanofiber also exhibited antibacterial activity and accelerated naproxen release at neutral pH, showing potential for wound healing applications.
Article
Nanoscience & Nanotechnology
Girum Getachew, Chiranjeevi Korupalli, Akash S. Rasal, Worku Batu Dirersa, Mochamad Z. Fahmi, Jia-Yaw Chang
Summary: This study reports the preparation of red-emitting CsMgxPb1-xI3 quantum dots (QDs) and their biofunctionalization into gadolinium-conjugated pluronic 127 micelles (PQD@Gd) for dual-modal imaging and photodynamic therapeutic properties. The PQD@Gd nanoagents exhibit superior MR contrasting effects and have potential applications in cancer therapy and organic pollutant removal. Additionally, the PQD@Gd nanoagents demonstrate excellent photocatalytic activity towards organic pollutants under visible light irradiation, showcasing their multifunctionality.
ACS APPLIED MATERIALS & INTERFACES
(2022)