Article
Chemistry, Multidisciplinary
Shougang Sun, Jie Zhu, Zhongwu Wang, Yinan Huang, Yongxu Hu, Xiaosong Chen, Yajing Sun, Liqiang Li, Wenping Hu
Summary: The oxygen-induced lattice strain (OILS) strategy is developed to achieve organic semiconductors (OSCs) with high mobility and high stability by introducing oxygen (O2) into the OSC crystals, generating lattice compressive strain and increasing the orbital overlap between molecules.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Genming Zhu, Junxin Chen, Jiayao Duan, Hailiang Liao, Xiuyuan Zhu, Zhengke Li, Iain McCulloch, Wan Yue
Summary: Tuning the film morphology and aggregated structure is a vital means to improve the performance of mixed ionic-electronic conductors in organic electrochemical transistors. In this study, three fluorinated alcohols were used as solvents and successfully enhanced the performance of the n-type small-molecule active layer. HFIP-fabricated devices showed impressive conductivity and stability, which can be attributed to the aggregation-induced structural ordering by fluorinated alcohols during spin coating.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Ke Pei
Summary: In this work, a two-dimensional CuInP2S6 crystal is integrated into Fe-OFETs, which exhibit excellent ferroelectric performance and high programming speed. The flexible devices also show promising performance for short-term data storage and integration with other flexible electronics.
SURFACES AND INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Wanlong Lu, Jingning Cao, Chenyang Zhai, Laju Bu, Guanghao Lu, Yuanwei Zhu
Summary: This study investigated the influence of a novel soluble molecular dopant, CN6-CP, on the performance optimization of OFETs. The results showed that doping with CN6-CP significantly improved the field-effect mobility of OFETs and enabled wide tunability of the threshold voltage, demonstrating great potential for organic electronic applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Caiyu Yue, Huajun Sun, Xuehui Huang, Xiaofang Liu, Chao Yan
Summary: In this study, an A-doped (Ba0.85Sr0.15TiO3) film was prepared using the Sol-Gel method, and a liner dielectric layer was inserted into different positions of the film to investigate the influence of heterogeneous interface on electrical performance and energy storage performance. The results showed that the insertion of the liner dielectric layer improved insulation property and energy storage density significantly.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Dingyi Lu, Fanming Huang, Caifang Gao, Jianming Yang, Jing Guo, Yuanyuan Hu, Qinye Bao, Yong-Young Noh, Junhao Chu, Wenwu Li
Summary: A new doping system using an organic salt p-dopant is reported to significantly improve the device performance of organic field-effect transistors (OFETs). The optimized doping ratios increase the hole mobility and reduce the threshold voltage, while also reducing contact resistance and activation energy. The study also explores the impact of doping ratios on trap density.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Qing Zhou, Zhihui Wang, Yongkun Yan, Longfei Yang, Kai Chi, Yangjiang Wu, Wenhao Li, Zhiying Yi, Yunqi Liu, Yan Zhao
Summary: In this study, the impact of molecular orientation on the dynamic performance of stretched semiconducting polymers is clarified by controlling molecular orientations through solvent-dependent spin-coating. Strain-enhanced electrical performance is feasible by reducing disorders in face-on-packed aggregates. Strain facilitates 3D ordering in face-on-packed films but increases π-π orientation disorders and lamellar dislocation in the edge-on analogue, resulting in a decreased charge transport. The face-on samples demonstrate strain-resistant energetic disorder and a 1.5x increase in on-current, achieving a 10-times-higher retention than the edge-on analogue upon 100% strain. Additionally, a reliable method for measuring the photoelectrical stretchability of semiconducting polymer is developed.
NPJ FLEXIBLE ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Nawishta Jabeen, Ahmad Hussain, Muhammad Adnan Qaiser, Jazib Ali, Abdul Rehman, Nourreddine Sfina, Gharieb A. Ali, Vineet Tirth
Summary: This article explores the application of high-entropy ceramic systems in dielectric ceramic capacitors. By substituting oxide cations at lattice sites, materials with high-performance capacitive properties were fabricated. The experimental results demonstrate that the high-entropy ceramic systems have good energy storage density and high energy conversion efficiency.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
Xiaobing Cao, Lei Hao, Zijin Liu, Gengyang Su, Xin He, Qingguang Zeng, Jinquan Wei
Summary: Solvent engineering technology is important for fabricating high quality perovskite films and high-performance perovskite solar cells. However, the usage of toxic solvents poses a serious threat to health and the environment. This study presents an all green solvent engineering approach to prepare high quality perovskite films and achieve efficient solar cell performance, addressing the issue of solvent toxicity in perovskite film production.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yu Zhang, Shuaifei Mao, Chunli Jiang, Bobo Tian, Chunhua Luo, Hechun Lin, Jadranka Travas-sejdic, Hui Peng, Chun-Gang Duan
Summary: In this study, a two-terminal synaptic device with an Al/PVDF-TrFE/PEDOT:PSS/ITO structure was fabricated, and it successfully emulates important synaptic functions of biological synapses by stabilizing the postsynaptic conductance through the remnant polarization of PVDF-TrFE. This work provides a simple strategy to design two-terminal synaptic devices with high stability and plasticity.
ORGANIC ELECTRONICS
(2022)
Article
Engineering, Chemical
Sung Ju Shin, You-In Park, Hosik Park, Young Hoon Cho, Ga Yeon Won, Youngmin Yoo
Summary: A facile method for crosslinking polybenzimidazole membranes for organic solvent nanofiltration using an aqueous potassium permanganate solution was presented. The crosslinked membranes exhibited superior separation performance and enhanced stability in various solvents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zhen Ji, Wenrui Zhao, Lanyi Xiang, Jiamin Ding, Dongyang Wang, Xiaojuan Dai, Liyao Liu, Fengjiao Zhang, Ye Zou, Chong-an Di
Summary: Efficient photodoping of polymeric semiconductors is crucial for high-performance photodetectors and photo-thermoelectric devices. The hierarchical heterojunction design enables effective exciton separation and charge transfer, leading to improved photodetection and photothermoelectric conversion.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yu-Chieh Chien, Heng Xiang, Jianze Wang, Yufei Shi, Xuanyao Fong, Kah-Wee Ang
Summary: By harnessing the physically unclonable properties, true random number generators (TRNGs) can generate random bitstreams that are cryptographically secured, alleviating security concerns. However, conventional hardware often shows predictable patterns susceptible to machine learning attacks. This paper presents a low-power self-corrected TRNG based on molybdenum disulfide ferroelectric field-effect transistors, which exhibits enhanced stochastic variability and passes machine learning attacks, as well as statistical tests.
Article
Chemistry, Multidisciplinary
Peng Chen, Xiaohan Sun, Bernd Plietker, Michael Ruck
Summary: A newly developed electrolyte enables dendrite-free growth and efficient reaction in zinc ion hybrid capacitors, resulting in stable performance under different conditions.
Article
Chemistry, Multidisciplinary
F. Yang, S. Bao, Y. Zhai, Y. Zhang, Z. Su, J. Liu, J. Zhai, Z. Pan
Summary: Predictable defects engineering strategy was employed to enhance the energy storage performance of dielectric ceramics, resulting in the successful fabrication of novel ceramics with improved properties and providing an effective route for developing Bi0.5Na0.5TiO3-based systems.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Physical
Sorb Yesudhas, Maria V. Morrell, Matthew J. Anderson, Carsten A. Ullrich, Curtis Kenney-Benson, Yangchuan Xing, Suchismita Guha
CHEMISTRY OF MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Amrit Laudari, John Barron, Alec Pickett, Suchismita Guha
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Sorb Yesudhas, Randy Burns, Barbara Lavina, Sergey N. Tkachev, Jiuyu Sun, Carsten A. Ullrich, Suchismita Guha
PHYSICAL REVIEW MATERIALS
(2020)
Article
Energy & Fuels
Siphelo Ngqoloda, Christopher J. Arendse, Suchismita Guha, Theophillus F. Muller, Stephen C. Klue, Siphesihle S. Magubane, Clive J. Oliphant
Summary: Mixed halide perovskites doped with chlorine exhibit superior properties improving solar cell device performance. The substitution of chlorine by iodine ions only occurs during the conversion to perovskite phase. Chlorine-doped perovskite solar cells show improved device efficiencies compared to undoped perovskite solar cells.
Article
Materials Science, Multidisciplinary
Randy Burns, Siphelo Ngqoloda, Christopher J. Arendse, Barbara Lavina, Ashutosh Dahal, Deepak K. Singh, Suchismita Guha
Summary: The study successfully grew methylammonium lead iodide films using chemical vapor deposition, increasing air stability and inducing stable cubic phase formation. The samples maintained the cubic phase at pressures as low as 0.25 GPa. X-ray diffraction studies showed that the CVD-grown MAPbI3 crystals remained in the cubic phase between 0.25 and 3.0 GPa.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Chemistry, Physical
Payal Bhattacharya, Maria Morrell, Yangchuan Xing, Cherian J. Mathai, Ping Yu, Suchismita Guha
Summary: Lead halide perovskites exhibit interesting nonlinear optical properties, allowing for third and higher-order harmonic generation. By comparing CsPbBr3 nanocrystals to RP-CsPbBr3 nanocrystals with planar defects, it was found that the RP-CsPbBr3 has a higher efficiency in third harmonic generation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Maria Morrell, Alec Pickett, Payal Bhattacharya, Suchismita Guha, Yangchuan Xing
Summary: In this study, the optoelectronic properties of all-inorganic CsPbBr3 perovskite nanocrystals with and without RP planar faults were compared. It was found that RP-CsPbBr3 PNCs have higher exciton binding energy and longer exciton lifetimes, attributed to quantum confinement effects and spatial electron-hole separation across the RP faults. Additionally, a significant difference was observed in the up-conversion photoluminescence response of the two types of CsPbBr3 PNCs. The all-inorganic RP-CsPbBr3 PNCs were tested in light-emitting devices for the first time and showed superior performance compared to nonRP CsPbBr3 PNCs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Applied
Rory Butler, Randy Burns, Dallar Babaian, Matthew J. Anderson, Carsten A. Ullrich, Maria V. Morrell, Yangchuan Xing, Jaewon Lee, Ping Yu, Suchismita Guha
Summary: The strong spin-orbit coupling and orbital moment in lead halide perovskites significantly affect the optoelectronic properties under external magnetic fields, with the observed enhancement in photoluminescence intensity and red-shift in emission. Density-functional theory calculations show a negligible change in energy gap with the magnetic field. The experimental results suggest the mixing of singlet and triplet excitonic states under weak magnetic fields.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
John Barron, Jaewon Lee, Suchismita Guha
Summary: The design of appropriate dielectrics is crucial for the performance of organic field-effect transistors. Incorporating magnetic nanoparticles into polymer dielectrics improves the device performance, and an external magnetic field can tune the device performance.
JOURNAL OF MATERIALS RESEARCH
(2022)
Editorial Material
Engineering, Electrical & Electronic
Suchismita Guha, Gerrit Boschloo
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Wendel A. Alves, Gavin M. King, Suchismita Guha
Summary: The solution processability of organic semiconductors and conjugated polymers, the use of nanomaterials as conducting inks, the potential of self-assembled peptides in printed technology, and the challenges of nanopatterning self-assembled peptides using ice lithography are addressed in this minireview.
Article
Materials Science, Multidisciplinary
John Barron, Salahuddin Attar, Payal Bhattacharya, Ping Yu, Mohammed Al-Hashimi, Suchismita Guha
Summary: This study reports on the synthesis of thiazole flanked fluorinated isoindigo (IID) copolymers and demonstrates their field-effect transistor (FET) properties. By varying the FET geometries and dielectric layers, n-type transport and high electron carrier mobility are achieved. In addition, fluorination is shown to enhance the nonlinear optical properties.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Engineering, Electrical & Electronic
Randy Burns, Siphelo Ngqoloda, Stephen C. Klue, Evguenia Karapetrova, Christopher J. Arendse, Suchismita Guha
Summary: Methylammonium lead iodide thin films were successfully synthesized using chemical vapor deposition, and their structure and properties were investigated using X-ray diffraction and photoluminescence. The results showed that the films maintained a tetragonal structure in the temperature range of 20-300 K, displaying a single-phase behavior and uniform phase.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Siphelo Ngqoloda, Christopher J. Arendse, Theophillus F. Muller, Paul F. Miceli, Suchismita Guha, Louise Mostert, Clive J. Oliphant
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
Michelle S. Liberato, Rodrigo S. N. Mancini, Irina M. Factori, Fabio F. Ferreira, Vivian L. de Oliveira, Juliana B. T. Carnielli, Suchismita Guha, Luis A. Peroni, Marcone A. L. Oliveira, Wendel A. Alves
ACS APPLIED ELECTRONIC MATERIALS
(2019)
