Article
Chemistry, Physical
Laila M. Nhari, Reda M. El-Shishtawy, Qiuchen Lu, Yuanzuo Li, Abdullah M. Asiri
Summary: Three novel triarylamine-based electron-rich chromophores were synthesized and fully characterized, showing transparency suitable for hole transport materials in perovskite solar cells. Computational investigation revealed promising potential for these compounds to be utilized as hole transport materials in perovskite solar cells.
Article
Chemistry, Physical
Adva Shpatz Dayan, Lioz Etgar
Summary: This study found that monocation perovskites perform better than mixed-cation perovskites in HTL-free cells due to their superior hole mobility and p-type behavior. Mixed-cation perovskites work better in other types of cells.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Vellaichamy Joseph, Jianxing Xia, Albertus Adrian Sutanto, Vygintas Jankauskas, Cristina Momblona, Bin Ding, Kasparas Rakstys, Rajendiran Balasaravanan, Chun-Huang Pan, Jen-Shyang Ni, Shueh-Lin Yau, Muhammad Sohail, Ming-Chou Chen, Paul J. Dyson, Mohammad Khaja Nazeeruddin
Summary: Triarylamine end-capped-functionalized arylene-imidazole derivatives were synthesized and used as hole transporting materials in perovskite solar cells. The HTMs exhibited high thermal stability and efficient hole transfer, with potential for large-scale applications in PSCs. The triarylamine-functionalized imidazolyl-capped bithiophene molecule showed the best power conversion efficiency among the HTMs tested.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Zheling Zhang, Cong Xu, Dongjie Wang, Xiaoling Zhang, Jian Zhang
Summary: Carbon-based mesoscopic perovskite solar cells often suffer from severe defects-induced carrier recombination loss due to poor crystal quality. This study successfully fabricates high-efficiency carbon-based perovskite solar cells by adding benzylamine hydroiodide, which also improves operational stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Hao-Sheng Lin, Takahiro Doba, Wataru Sato, Yutaka Matsuo, Rui Shang, Eiichi Nakamura
Summary: Polytriarylamine, a popular hole-transporting material in solar cells, has suboptimal conductivity and recombination at the interface. By inserting a bithiophene unit between two triarylamine units, the conjugation and performance of the material are improved, resulting in high efficiency solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Electrical & Electronic
M. Ben Karoui, S. Saadaoui, A. Torchani, R. Gharbi
Summary: Dyes from plants were used in dye-sensitized solar cells, with TiO2 photoanodes deposited on transparent glass substrates. The structural and morphological properties of the photoanodes were studied, and DSSCs with natural pigments showed higher energy conversion efficiency.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Applied
Haitao Zhou, Shiyan Guo, Xin Jin, Jun Cao, Jing Cui, Zhenhong Zhao, Jinhai Huang, Jianhua Su
Summary: Three novel hole transport materials were designed and synthesized by introducing triphenylvinyl group. They showed excellent thermal stability and high energy levels, leading to good electroluminescence performance in double layer green OLEDs.
Article
Chemistry, Multidisciplinary
Bolin Li, Kun Yang, Qiaogan Liao, Yang Wang, Mengyao Su, Yongchun Li, Yongqiang Shi, Xiyuan Feng, Jiachen Huang, Huiliang Sun, Xugang Guo
Summary: The study developed two new copolymers as dopant-free hole-transporting layers, which exhibited excellent performance in inverted PVSCs, highlighting their potential in enhancing the efficiency of solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Gang Li, Yuanyi Zhang, Qingfei Liang, Jinniu Zhang, Jia Liu, Yumeng Liu, Chunlan Wang, Jianzhi Gao, Hongbing Lu
Summary: In this study, Co3O4-TiO2 porous heterojunction nanosheets derived from BMOFs were constructed and used for ethanol sensing. The Co3O4-TiO2 nanosheets showed better sensing performances than TiO2 nanotablets, and the nanosheets with an optimal molar ratio of 12 mol% exhibited the highest response value and selectivity coefficient.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Wei Dong, Shaobing Xiong, Jianming Yang, Wencheng Qiao, Qi Zeng, Xuelu Wang, Yefeng Yao, Qinye Bao
Summary: In this study, the use of BP:PTAA as hole transport layer in PSCs significantly improved charge extraction and device stability, resulting in higher power conversion efficiency. By enhancing interface properties and optimizing film quality, interfacial charge recombination and trap assisted recombination were successfully suppressed.
ORGANIC ELECTRONICS
(2021)
Article
Physics, Applied
Qing Rong, De'en Guo, Jiao Ma, Siyuan Lin, Han Huang, Deming Kong, Yongli Gao, Conghua Zhou
Summary: Crystallization of perovskite in carbon-electrode based, low-temperature, mesoscopic perovskite solar cells is studied. The thickness of carbon-electrode or the volume of perovskite precursor is adjusted to control the crystallization process. Uniform crystallization improves charge transfer and power conversion efficiency.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Shan Liu, Shuyue Wu, Pufeihong Xia, Haipeng Xie, Xiaoming Yuan, Youzhen Li, Deming Kong, Han Huang, Yongli Gao, Conghua Zhou
Summary: This study investigates the use of oleylamine modified spiro-OMeTAD matrix as the hole-transport layer in perovskite solar cells. The results show that moderate doping improves the power conversion efficiency and moisture resistance, likely due to enhanced charge extraction, delayed charge recombination, and defect passivation on the perovskite.
APPLIED PHYSICS LETTERS
(2022)
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
Chemistry, Physical
Qingbo Wei, Zhangwen Ye, Yixuan Gao, Nannan Wang, Lina Feng, Qingxia Zhao, Xiufang Hou, Lingxing Zan, Feng Fu, Dong Yang
Summary: This study demonstrates the use of phenethylammonium iodide (PEAI) to passivate defects in perovskite films, leading to a significant decrease in trap density and prolonged charge lifetime. The passivation strategy resulted in improved photovoltaic performance and stability of perovskite solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
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
Chemistry, Multidisciplinary
Nan Wang, Majid Kabiri Samani, Hu Li, Lan Dong, Zhongwei Zhang, Peng Su, Shujing Chen, Jie Chen, Shirong Huang, Guangjie Yuan, Xiangfan Xu, Baowen Li, Klaus Leifer, Lilei Ye, Johan Liu
Article
Materials Science, Multidisciplinary
Andreas Frisk, Hasan Ali, Peter Svedlindh, Klaus Leifer, Gabriella Andersson, Tomas Nyberg
Article
Physics, Applied
Hu Li, Tianbo Duan, Soumyajyoti Haldar, Biplab Sanyal, Olle Eriksson, Hassan Jafri, Samar Hajjar-Garreau, Laurent Simon, Klaus Leifer
APPLIED PHYSICS REVIEWS
(2020)
Article
Chemistry, Multidisciplinary
Tianbo Duan, Hu Li, Klaus Leifer
Summary: This study reports an electron-beam-activated fluorination/defluorination cycle for achieving long-term preservation of chemical vapor deposition (CVD) graphene. After the cycle, the accumulation of airborne hydrocarbon on the graphene surfaces is reduced, and the initial chemical status of graphene can be restored.
Article
Crystallography
Tianbo Duan, Hu Li, Lakshya Daukiya, Laurent Simon, Klaus Leifer
Summary: The introduction of covalent C-F bonds can significantly enhance the graphene sensing response to ammonia gas, improve the gas adsorption ability on the surface of fluorinated graphene, and the Langmuir isotherm model can be used to analyze the adsorption kinetics between gases and fluorinated graphene.
Article
Nanoscience & Nanotechnology
Tianbo Duan, Hu Li, Raffaello Papadakis, Klaus Leifer
Summary: This study reports an efficient and easy method to clean polymer residues on graphene surface, resulting in a 3-fold increase in carrier mobility in CVD graphene and the potential for achieving ballistic transport.
Article
Chemistry, Multidisciplinary
Hu Li, Tianbo Duan, Omer Sher, Yuanyuan Han, Raffaello Papadakis, Anton Grigoriev, Rajeev Ahuja, Klaus Leifer
Summary: Graphene, with its chemically inert surface, has been non-covalently functionalized using pi-pi stacking interactions for enhanced ammonia detection in this study. The use of 5,5'-Di(4-biphenylyl)-2,2'-bithiophene molecules resulted in a 3-fold higher sensitivity compared to pristine graphene, showcasing the potential for chemical detection applications.
Article
Chemistry, Multidisciplinary
Guotao Peng, Tianbo Duan, Mengyu Guo, Yurui Xue, Chunying Chen, Yuliang Li, Klaus Leifer, Bengt Fadeel
Summary: The research findings reveal the complex and bidirectional effects of Graphdiyne oxide on human macrophages. The biodegradation-dependent induction of GDYO on macrophages leads to a reprogramming effect, shifting M2 macrophages towards M1 macrophages, without causing cytotoxicity.
Article
Chemistry, Multidisciplinary
Guotao Peng, Marcelo F. Montenegro, Chifundo N. M. Ntola, Sandra Vranic, Kostas Kostarelos, Carmen Vogt, Muhammet S. Toprak, Tianbo Duan, Klaus Leifer, Lars Brautigam, Jon O. Lundberg, Bengt Fadeel
Article
Chemistry, Physical
Jose A. Marquez, Jon-Paul Sun, Helena Stange, Hasan Ali, Leo Choubrac, Stefan Schaefer, Charles J. Hages, Klaus Leifer, Thomas Unold, David B. Mitzi, Roland Mainz
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Physical
Fredrik O. L. Johansson, Ute B. Cappel, Mattis Fondell, Yuanyuan Han, Mihaela Gorgoi, Klaus Leifer, Andreas Lindblad
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Engineering, Multidisciplinary
Andrew M. Hank, Cuthbert Nyamupangedengu, Bridget K. Mutuma, Hu Li, Neil J. Coville, K. Leifer, Lakovos Sigalas
INTERNATIONAL JOURNAL OF ENGINEERING RESEARCH IN AFRICA
(2020)
Article
Materials Science, Multidisciplinary
A. Irkhina, S. Levcenko, L. Xie, K. Leifer, T. Unold
JOURNAL OF MATERIALS CHEMISTRY C
(2019)
Article
Chemistry, Multidisciplinary
Ishtiaq H. Wani, S. Hassan M. Jafri, John Warna, Aqib Hayat, Hu Li, Vivek A. Shukla, Andreas Orthaber, Anton Grigoriev, Rajeev Ahuja, Klaus Leifer
Review
Chemistry, Multidisciplinary
Farnaz Ghajeri, Zareh Topalian, Andrea Tasca, Syed Hassan Mujtaba Jafri, Klaus Leifer, Peter Norberg, Christer Sjostrom
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2018)
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.
