Article
Chemistry, Inorganic & Nuclear
Tong Zhao, Marvin A. Kraft, Wolfgang G. Zeier
Summary: A series of halide mixed solid solutions of Na3InCl6-xBrx (0≤x≤2) were successfully synthesized by ball milling and subsequent annealing, inspired by the significant improvement in transport property of anion-substituted lithium metal halides. The Na3InCl6-xBrx solid solution series crystallizes in a monoclinic P2(1)/n phase through milling, while the subsequent annealing transforms it into a trigonal P3 1c phase. The ionic conductivity in the Na3InCl6-xBrx series is slightly improved by halide substitution, indicating that mixed halide compositions and structural changes have an impact on ionic transport, although less strongly than in lithium analogues such as Li3YCl6-xBrx and Li3InCl6-xBrx.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Moon Jong Han, Dayan Wei, Hee Seong Yun, Seong-hun Lee, Hyungju Ahn, David M. Walba, Tae Joo Shin, Dong Ki Yoon
Summary: We report a method for three-dimensional molecular orientation control of a liquid crystal organic semiconductor (LC-OSC) based on the long-range ordering characteristic of the LC material. By synthesizing LC-OSC molecules and designing a specific structure, the orientation control of LC-OSC can be achieved over a large area. Optical observation and electrical testing confirm the feasibility of this method, which is significant for the fabrication of multidirectional and multifunctional organic electronic devices.
NPG ASIA MATERIALS
(2022)
Article
Materials Science, Coatings & Films
Zhaojing Gao, Dieudonne Niyonkuru, Arthur Yelon, Clara Santato
Summary: The fullerene-based derivative PCBM has been widely studied as an n-type transistor channel and an organic photovoltaic material. However, disorder in solution-processed PCBM thin films complicates the understanding of charge carrier transport mechanisms. In this study, PCBM-based field effect transistors were fabricated, and the device performance was improved by reducing electron trapping and improving charge carrier injection. Single-wall carbon nanotubes were integrated into gold electrodes, which enhanced injection efficiency. Meyer-Neldel behavior was observed, and charge carrier transport was found to occur mainly in amorphous regions with hopping transport between molecules.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Physical
Yirong Gao, Nana Li, Yifan Wu, Wenge Yang, Shou-Hang Bo
Summary: The Meyer-Neldel rule reveals the correlation between activation energy E-a and pre-factor σ(0), providing guidance for searching fast ionic conductors. Lithium, sodium, and magnesium ionic conductors are categorized into three types based on the relative magnitude of Δ(0) and the thermal energy (k(B)T) at the application temperature. The optimization of σ by tuning E-a for these types of ionic conductors is elaborated.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Gyeong Seok Lee, Hyeok-jin Kwon, Tae Kyu An, Yun-Hi Kim
Summary: In recent years, there have been various studies on replacing toxic halogenated/aromatic hydrocarbon organic solvents commonly used in solution-processed organic field-effect transistors with more sustainable green solvents. This review summarizes the properties of solvents used to process organic semiconductors and their toxicities. The efforts to avoid using toxic organic solvents are also discussed, including the molecular engineering of organic semiconductors, asymmetric deformation and random copolymerization, and the use of miniemulsion-based nanoparticles.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Prapti Kafle, Siyuan Huang, Kyung Sun Park, Fengjiao Zhang, Hao Yu, Caroline E. Kasprzak, Hyunchul Kim, Charles M. Schroeder, Arend M. van der Zande, Ying Diao
Summary: The interaction between graphene and conjugated polymers plays a crucial role in the design of hybrid electronics. In this study, we found that graphene can strongly interact with PII-2T, resulting in higher fiber density, film coverage, crystallinity, and polymer alignment of the monolayer films. Spectroscopic analysis confirmed the existence of organic-electronic interactions at the graphene-polymer interface. These findings provide valuable insights into the graphene-polymer interactions at the nanoscopic interfaces and their impact on multiscale morphology, which can aid in the design of efficient graphene-organic hybrid electronics.
Article
Chemistry, Physical
Peng Du, Nana Li, Xiao Ling, Zhijun Fan, Artur Braun, Wenge Yang, Qianli Chen, Arthur Yelon
Summary: Proton conductivity in Y-doped BaMO3 follows the Meyer-Neldel rule, indicating that tuning lattice vibration frequency can enhance proton conductivity at low temperatures. The conductivities intersect at an isokinetic temperature, where proton conductivity is independent of activation energy, suggesting the importance of lattice properties in proton conduction mechanism. It is suggested that materials with stiff lattices and high isokinetic temperature can achieve improved proton conductivity at lower temperatures.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Bingjie Ye, Xuecheng Jiang, Yan Gu, Guofeng Yang, Yushen Liu, Huiqin Zhao, Xifeng Yang, Chunlei Wei, Xiumei Zhang, Naiyan Lu
Summary: The study reveals that two-dimensional MoSi2N4 is a suitable channel material for high-performance transistors due to its high carrier mobility, appropriate band gap, and good environmental stability. By performing ab initio quantum-transport calculations, the performance of double-gate MOSFETs based on monolayer MoSi2N4 is predicted. The results show excellent on-state current and performance metrics.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Zhaojing Gao, Manuel Reali, Arthur Yelon, Clara Santato
Summary: This study provides clear insights into the mechanisms of charge carrier transport in amorphous glassy polymeric semiconductors, highlighting the roles of molecular relaxations and the movement of the molecular backbone and chain segments.
MATERIALS ADVANCES
(2022)
Article
Physics, Applied
Paromita Bhattacharjee, Himakshi Mishra, Parameswar K. K. Iyer, Harshal B. B. Nemade
Summary: This study demonstrates and analyzes the acoustically improving charge transport characteristics of a regioregular poly(3-hexylthiophene) (rrP3HT) based organic field effect transistor (OFET) fabricated on a YZ lithium niobate piezoelectric substrate. The acoustoelectric (AE) effect leads to a reduction in the effective energy gap between charge hopping states, resulting in a decrease in charge trapping, an increase in path conductivity, and the number of paths for charge transport. The presence of a surface acoustic wave (SAW) significantly increases the drain current and mobility, and reduces the gate voltage. The bias stress analysis confirms that the propagation of SAW enhances the long-term stability of the OFETs by compensating for the charge trapping effect.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Hongyu He, Yuan Liu, Junli Yin, Xinlin Wang, Xinnan Lin, Shengdong Zhang
Summary: The drain current of amorphous InGaZnO thin-film transistors shows Arrhenius and non-Arrhenius dependencies at different temperatures, with the gate-voltage-dependent effective temperature introduced in the Arrhenius equation. The equation successfully explains the drain current behavior at low and high gate voltages by considering both the normal and inverse MeyerNeldel rules. Calculated results are verified by experimental data of amorphous La-doped InZnO TFT and amorphous InGaZnO TFT.
SOLID-STATE ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Han Zhou, Yuming Fei, Zhiqiang Ai, Di Hui, Liangzheng Zhu, Guoxing Pan, Fapei Zhang
Summary: This study demonstrates the achievement of using highly aligned films of a semiconducting polymer through solvent vapor annealing under a high magnetic field. The effect of different processing solvents on the magnetic alignment dynamics and resulting orientational order of a specific polymer is investigated. The highest degree of alignment is achieved through chloroform-vapor annealing, attributed to its low boiling point and solubility to the polymer. Field-effect transistors with these aligned films show significantly enhanced electronic mobility and anisotropy.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Fei Zheng, Lei Li, Luodan Hu, Xiaoqing Huang, Tze-Peng Kuo, Kuan-Chang Chang
Summary: This study proposes a new embedded structure for TFTs, which shows improved gate control ability and lower contact resistance. Compared to the traditional BCE TFT configuration, the embedded TFTs demonstrate superior electrical characteristics, including a smaller subthreshold swing and a higher mobility. The performance and mechanism of this embedded structure are cross-validated using Silvaco TCAD simulation.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Electrical & Electronic
Yu-Shien Shiah, Kihyung Sim, Yuhao Shi, Katsumi Abet, Shigenori Ueda, Masato Sasase, Junghwan Kim, Hideo Hosono
Summary: This study successfully fabricated ultrastable thin-film transistors with mobilities of 70 cm(2) (V s)(-1) by understanding the origins of instability in high-mobility amorphous oxide transistors. The research identified the sensitivity of amorphous oxide semiconductors to externally introduced impurities and defects, and explained the mechanism of how carbon-monoxide-related impurities affect the stability of high-mobility indium tin zinc oxide transistors.
NATURE ELECTRONICS
(2021)
Article
Chemistry, Analytical
Piumi Kulatunga, Nastaran Yousefi, Simon Rondeau-Gagne
Summary: Polyethylene is a widely used polymer with various applications in our lives. However, its potential in the field of organic electronics has been underexplored. This study focuses on the development of new polymer blends by combining polyethylene with a high-performance semiconducting polymer. The resulting blends were carefully characterized to understand their properties. The introduction of polyethylene had little effect on the solid-state properties, but influenced the solid-state morphology. Organic field-effect transistors prepared from these blends showed good device characteristics, even at higher ratios of polyethylene. The addition of polyethylene also improved the mechanical robustness and stretchability of the semiconducting polymer.
Article
Biochemistry & Molecular Biology
Jan Richtar, Lucia Ivanova, Dong Ryeol Whang, Cigdem Yumusak, Dominik Wielend, Martin Weiter, Markus Clark Scharber, Alexander Kovalenko, Niyazi Serdar Sariciftci, Jozef Krajcovic
Summary: A series of novel soluble nature-inspired flavin derivatives were synthesized and characterized, demonstrating their potential for delicate tuning of optical properties and thermal stability. Thin films prepared thereof exhibit high stability with smooth and homogeneous morphology.
Article
Chemistry, Physical
Gizem Acar, Muhammad Javaid Iqbal, Mujeeb Ullah Chaudhry
Summary: Organic light-emitting field-effect transistors have the potential to simplify display pixel design, with p-type polymer heterostructure-based LEFET architecture showing promising results in improving charge injection and recombination efficiency. The device structure achieved a hole mobility of approximately 2.1 cm(2) V-1 s(-1) and an EQE of 1.6% at a luminance of 2600 cd m(-2), demonstrating advancements in polymer-based LEFET technology for new digital display applications.
Article
Chemistry, Applied
Matous Kratochvil, Martin Ciganek, Cigdem Yumusak, Hathaichanok Seelajaroen, Ivana Cisarova, Jan Fabry, Martin Vala, Stanislav Lunak, Martin Weiter, Niyazi Serdar Sariciftci, Jozef Krajcovic
Summary: Optical and semiconducting properties of vacuum-deposited thin films of four hydrogen-bonded pigments were studied. DPPs were found to be p-type semiconductors, while DTPPs were identified as n-type semiconductors, with Ph-DTPP film exhibiting the highest electron mobility.
Article
Chemistry, Multidisciplinary
Jun Matsui, Kazuki Ebata, Masaki Takeda, Kim Ngan Hua, Hiroshi Katagiri, Ken-ichi Nakayama, Akito Masuhara, Cigdem Yumusak, Philipp Stadler, Markus Clark Sharber, Matthew Schuette White, Niyazi Serdar Sariciftci, Tsukasa Yoshida, Madalina Furis
Summary: The study showed that millimeter-long organic fiber arrays can be prepared using the evaporation-induced self-assembled method, with individual fibers being HB194 single crystals. By eliminating defects and structural disorder, it was possible to achieve longer-lived intramolecular charge transfer (CT) excitonic states.
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Frank Balzer, Marvin F. Schumacher, Sara Mattiello, Matthias Schulz, Jennifer Zablocki, Marc Schmidtmann, Klaus Meerholz, N. Serdar Sariciftci, Luca Beverina, Arne Luetzen, Manuela Schiek
Summary: The impact of chiral aggregation in solution processed and thermally annealed thin films of indolenine and anilino squaraines with chiral (S)-citronellyl functionalization was investigated. One of the indolenine squaraines showed a pseudo polymorphic crystal structure, while both compounds in thin films were found to be non-aggregated and isotropic. The circular dichroism correlated with the morphology of the samples, with the CD spectra reinforcing the excitonic nature of the characteristic double hump signatures.
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Dogukan H. Apaydin, Dominik Farka, Elyse A. Schriber, Matthew Yeung, Georg Gramse, Niyazi Serdar Sariciftci, Dominik Eder, J. Nathan Hohman
Summary: This paper introduces a method for the oriented growth of PEDOT chains on nanometer-thick self-assembled monolayer (SAM)-modified gold electrodes and investigates the chemical nature and physical properties of the oriented PEDOT film. The oriented growth method helps to improve the transport performance of polymer materials and is applicable for applications in organic electronic devices that require surface modification.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Ana Cetkovic, Alessandro Bellapianta, Mihai Irimia-Vladu, Jakob Hofinger, Cigdem Yumusak, Andrea Corna, Markus Clark Scharber, Gunther Zeck, Niyazi Serdar Sariciftci, Matthias Bolz, Ahmad Salti
Summary: A retinal prosthesis using organic photovoltaic semiconductors shows promising potential for restoring vision to patients with retinal dystrophies. In this study, cytotoxicity assessments were conducted on various organic materials, and the mixture of D18/Y6 was found to be non-toxic. This indicates that D18/Y6 can be further investigated as a safe retinal implant.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Editorial Material
Chemistry, Multidisciplinary
Niyazi Serdar Sariciftci
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Carolina Picasso, Yolanda Salinas, Oliver Brueggemann, Markus Clark Scharber, Niyazi Serdar Sariciftci, Olavo D. F. Cardozo, Eriverton S. Rodrigues, Marcelo S. Silva, Andreas Stingl, Patricia M. A. Farias
Summary: Strategies for the production and use of nanomaterials are advancing towards safety and sustainability. The demand for high-performance nanomaterials, such as Zinc oxide (ZnO), is increasing due to its environmental compatibility and tunable properties. This study successfully produced both pristine and doped ZnO nanoparticles in powder form using whey as a chelating agent.
Article
Chemistry, Physical
Angelina Kerschbaumer, Dominik Wielend, Elisabeth Leeb, Corina Schimanofsky, Nadine Kleinbruckner, Helmut Neugebauer, Mihai Irimia-Vladu, Niyazi Serdar Sariciftci
Summary: When studying electrochemical oxygen reduction reactions, attention must be given to background activity with conventional electrode materials. Complementary methods such as rotating ring-disc electrode technique and chronoamperometric electrolysis were used to investigate the electrocatalytic activity of different materials. A detailed investigation of hydroxy anthraquinone derivatives and riboflavin electrocatalytic ability for hydrogen peroxide production was conducted, providing valuable insights for improving the oxygen reduction reaction.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Lauren R. Miller, Robert J. Borthwick, Paloma L. dos Santos, Mujeeb U. Chaudhry
Summary: Abnormal concentrations of VOCs in human breath can serve as disease-specific biomarkers for non-invasive medical diagnosis. A proof-of-concept study used solution-processed metal oxide TFTs to detect acetone vapours as a biomarker for diabetes. Increasing annealing temperature and channel length were found to enhance the electrical and sensing performance of the TFTs.
Article
Nanoscience & Nanotechnology
Maria Caterina Giordano, Francesco Buatier de Mongeot, Debasree Chowdhury, Shaimaa A. Mohamed, Giacomo Manzato, Beatrice Siri, Roberto Chittofrati, Mohamed Hussein, Mohamed F. O. Hameed, Salah S. A. Obayya, Philipp Stadler, Markus C. Scharber, Giuseppe Della Valle
Summary: Thin-film organic photovoltaic (OPV) devices are being considered as a promising alternative to silicon solar cells due to their lightweight, flexibility, and low cost. However, the low optical absorption of OPV active layers is still a challenge. In this study, we demonstrate that nanostructured interfaces at the subwavelength scale, created through laser interference lithography and reactive ion etching, can significantly enhance the optical absorption in thin-film OPV devices. This large-scale light-harvesting strategy resulted in a 19% increase in optical absorption and a 14% increase in short-circuit current compared to flat devices, highlighting its potential in thin-film technologies.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ivan I. Fishchuk, Andrey Kadashchuk, Cedric Rolin, Heinz Baessler, Anna Koehler, Paul Heremans, Jan Genoe
Summary: This study extends a random band-edge model to unravel the charge transport mechanism in high-mobility amorphous oxide semiconductors and describes the field-effect-modulated thermoelectricity in amorphous In-Ga-Zn-O (a-IGZO) films. The model suggests that the charge transport is limited by the spatial variation of the band edge position due to disorder potential rather than localized states. The unified model provides a quantitative description of experimental data and promotes a deeper understanding of the transport process in a-IGZO films.
Article
Chemistry, Physical
Josef M. Gallmetzer, Stefanie Kroll, Daniel Werner, Dominik Wielend, Mihai Irimia-Vladu, Engelbert Portenkirchner, Niyazi Serdar Sariciftci, Thomas S. Hofer
Summary: In this study, the electrochemical properties of anthraquinone and its derivatives were investigated using experimental data and computational methods. It was found that a low-cost method can be used for efficient pre-screening of candidate structures for organic electronic materials, followed by refinement using DFT methods to search for new high-performance materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
