Article
Chemistry, Inorganic & Nuclear
Manjeet Singh, Ashish Kumar Singh
Summary: In this study, a simple solution phase synthesis method was proposed for the synthesis of wurtzite phase Cu2ZnSnS4 (W-CZTS) nanocrystals incorporating dodecanethiol mixed with oleylamine as sulfur source. The synthesized W-CZTS nanocrystals showed plate-like structure and exhibited very good behavior in solar cell devices. The efficiency delivered by solar cell devices utilizing wurtzite phase was slightly higher compared to using kesterite phase CZTS under similar conditions.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Physical
Xinyao Shan, Binghan Li, Botao Ji
Summary: This study successfully synthesized monodisperse wurtzite InP quantum dots through cation exchange reaction and demonstrated the feasibility of using this method to synthesize other III-V wurtzite QDs. Additionally, the growth of a gradient ZnSeS shell on wurtzite InP QDs resulted in fluorescent QDs with controllable emission wavelengths.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
William E. Buhro, Chenguang Ji
Summary: Two-phase ligand exchange can convert the amine-ligated nanoplatelets to NMF-ligated ones, and further ligand exchange can lead to halometallate-ligated CdSe nanoplatelets. Analysis of the absorption spectra and X-ray diffraction data confirms the intact, Z-type binding of the halometallates.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hyo Cheol Lee, Megalamane S. Bootharaju, Kyunghoon Lee, Hogeun Chang, Seo Young Kim, Eonhyoung Ahn, Shi Li, Byung Hyo Kim, Hyungju Ahn, Taeghwan Hyeon, Jiwoong Yang
Summary: This study investigates the formation pathways of two distinct quantum-sized 2D wurtzite-CdSe nanocrystals using a comprehensive approach. The findings reveal the crucial role of Se precursor reactivity in determining the synthesis pathways. These results significantly advance the understanding of the growth mechanism governing quantum-sized 2D semiconductor nanocrystals and provide valuable guidelines for their rational synthesis.
Article
Chemistry, Multidisciplinary
Aleksandr A. A. Golovatenko, Ina V. V. Kalitukha, Grigorii S. S. Dimitriev, Victor F. F. Sapega, Maxim V. V. Rakhlin, Aidar I. I. Galimov, Tatiana V. V. Shubina, Elena V. V. Shornikova, Gang Qiang, Dmitri R. R. Yakovlev, Manfred Bayer, Amelie Biermann, Axel Hoffmann, Tangi Aubert, Zeger Hens, Anna V. V. Rodina
Summary: This paper investigates the influence of the crystal structure on the band-edge exciton fine structure in spheroidal CdSe nanocrystals. The study compares zinc blende and wurtzite CdSe nanocrystals using fluorescence line narrowing and time-resolved photoluminescence techniques. The results suggest that the nanocrystal shape and shape dispersion contribute to the energy splitting between bright and dark exciton states in both crystal structures.
Article
Chemistry, Multidisciplinary
Xinke Kong, Lin Ru, Junjun Ge, Yalei Deng, Pan-Ke Zhang, Yuanyuan Wang
Summary: Researchers observed and monitored a ligand-assisted phase transition process from zinc blende to wurtzite in CdSe nanoplatelets. They proposed a new crystal transformation pathway and elucidated a general phase-transition mechanism, which facilitates precise functional nanomaterial design.
Article
Physics, Condensed Matter
Andriy Zakutayev
Summary: This study demonstrates the synthesis and characterization of zinc niobium nitride (Zn2NbN3), a previously unreported II2-V-N-3 ternary nitride semiconductor. The Zn2NbN3 thin films were found to have a cation-disordered wurtzite-derived structure, in contrast to the chemically related rocksalt-derived Mg2NbN3 compound. Experimental measurements indicate lower values for the wurtzite lattice parameter ratio and optical absorption onset of Zn2NbN3 compared to computational values, suggesting the role of cation disorder in influencing the properties of heterovalent ternary nitride materials.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Chemistry, Physical
Haochen Sun, William E. Buhro
Summary: The ligand-exchange chemistries of wurtzite (WZ) and zinc-blende (ZB) CdTe nanoplatelets exhibit contrasting behaviors, which are consistent with their facet structures. WZ nanoplatelets prefer nonpolar facets and neutral ligation, while ZB nanoplatelets prefer polar, cationic facets and anionic ligation.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
David Stone, Somnath Koley, Sergei Remennik, Lior Asor, Yossef E. Panfil, Tom Naor, Uri Banin
Summary: In this study, luminescent wurtzite InP nanocrystals with narrow size distribution were successfully synthesized, showing highly resolved absorption spectrum and narrow emission line. Anisotropy measurements demonstrated polarized transitions directly reflecting the anisotropic wurtzite lattice of the nanocrystals.
Article
Chemistry, Multidisciplinary
Meiyan Ye, Yan Li, Ruilian Tang, Siyu Liu, Shuailing Ma, Haozhe Liu, Qiang Tao, Bin Yang, Xin Wang, Huijuan Yue, Pinwen Zhu
Summary: The bandgap of wurtzite CuInS2 nanocrystals is successfully extended and the photocurrent is enhanced using external pressure. The pressure-induced bandgap extension may be attributed to an increased charge density and ionic polarization between the In-S atoms. However, a phase transformation results in a significant reduction in photocurrent.
Article
Chemistry, Physical
Fei Huang, Jiajia Ning, Zonghui Duan, Aleksandr A. Sergeev, Arsenii Portniagin, Stephen Kershaw, Jianjun Tian, Andrey L. Rogach
Summary: The article discusses the phase transfer in heavy-metal-free ZnSe nanorods from hexagonal wurtzite to cubic zinc-blende phases mediated by Cu(I) ions under thermal heating, resulting in the synthesis of alloyed CuZnSe nanorods with a cubic zinc-blende phase. This strategy enables efficient full-spectrum solar energy harvesting by the nanostructures.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Biyun Ren, Bing Chen, Jianxiong Zhao, Yang Guo, Xin Zhang, Xian Chen, Yangyang Du, Zhiqin Deng, Guangyu Zhu, Feng Wang
Summary: Lanthanide-doped ScF3 nanoparticles were synthesized and studied for their thermal enhancement of upconversion, showing a significant increase in emission within a certain temperature range and high temperature sensitivity. The development of new methods may inspire the creation of thermally enhanced upconversion nanoparticles with high emission intensities.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Bryce A. Tappan, Weibin Chu, Matthew Mecklenburg, Oleg Prezhdo, Richard L. Brutchey
Summary: I-2-II-IV-VI4 and I-III-VI2 semiconductor nanocrystals have been widely used in photovoltaics and other optoelectronic technologies due to their low toxicity and efficient light absorption into the near-infrared region. This study reports the discovery of a metastable wurtzite-like polymorph of Cu2FeSnSe4, which may have superior semiconductor properties compared to the thermodynamically preferred stannite polymorph. Experimental and computational comparisons between Cu2FeSnSe4 and CuFeSe2 reveal the importance of elemental composition in designing syntheses for metastable materials.
Article
Chemistry, Physical
Purak Das, Suvendu Maity, Prasanta Ghosh, Arpita Dutta, Suven Das
Summary: Novel isoquinoline compounds were synthesized by inserting suitable nucleophiles into the ninhydrin core. Compound 1 exhibited a self-assembled zipper arrangement, while compound 4 displayed a supramolecular helical structure. The role of weak intermolecular interactions in the development of supramolecular structures was analyzed and quantified using Hirshfeld surface analysis.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Review
Materials Science, Multidisciplinary
Guowei Yang
Summary: Since the first observation of fullerene nearly three decades ago, allotropes of carbon, including carbon nanotube and graphene, have been the focus of considerable research due to their remarkable properties. Recently, carbyne nanocrystals (CNCs) have been synthesized in the laboratory and have shown potential applications in various fields.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2022)
Article
Energy & Fuels
Sijie Ge, Han Xu, Saqib Nawaz Khan, Wentao Yang, Ruijiang Hong, Yaohua Mai, Ening Gu, Xianzhong Lin, Guowei Yang
Summary: This study presents a strategy to suppress the over-thick Mo(S-x,Se1-x)(2) layer on the back contact by adjusting the proportion of sulfur, which leads to a significant improvement in total area efficiency of flexible CZTSSe solar cells. The method is also applicable to other absorber materials and demonstrates universality.
Article
Environmental Sciences
Colin Raymond, Laura Suarez-Gutierrez, Kai Kornhuber, Madeleine Pascolini-Campbell, Jana Sillmann, Duane E. Waliser
Summary: One of the major challenges of climate change is the increase in climate hazards and their impacts. The amplified impacts resulting from hazards occurring close to one another due to insufficient resilience of systems or increased severity of hazards are of special concern. This study projects changes in compounding hazards, showing that extreme heat events and consecutive extreme precipitation events are likely to increase in frequency, leading to an elevated risk of simultaneous crop failures in key regions.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Saqib Nawaz Khan, Sijie Ge, Yuxiang Huang, Han Xu, Wentao Yang, Ruijiang Hong, Yaohua Mai, Ening Gu, Xianzhong Lin, Guowei Yang
Summary: By developing a composition gradient strategy, this research successfully fabricated a 6.82% efficient CZTSSe solar cell on an FTO substrate. The composition gradient enhances the crystallinity of the absorber, reduces surface roughness, and decreases device parasitic losses, leading to higher fill factor, open-circuit voltage, and conversion efficiency.
SCIENCE CHINA-MATERIALS
(2022)
Article
Energy & Fuels
Yunfeng Liang, Chunhong Zeng, Longlong Zeng, Genghua Yan, Ye Yuan, Xianzhong Lin, Hai Zhu, Yaohua Mai, Ruijiang Hong
Summary: By controlling the proportion and distribution of metal precursors, a self-seed inducing effect can be achieved during soft selenization, resulting in improved efficiency and reduced open circuit voltage deficit for CZTSe solar cells.
Article
Multidisciplinary Sciences
Efi Rousi, Kai Kornhuber, Goratz Beobide-Arsuaga, Fei Luo, Dim Coumou
Summary: Persistent heat extremes in Europe have severe impacts on ecosystems and societies, and the heatwave trends in Europe have been accelerating compared to other regions. The increase in the persistence of double jet events over Eurasia is found to be a major driver of this acceleration. These findings have important implications for risk management and potential adaptation strategies.
NATURE COMMUNICATIONS
(2022)
Article
Geosciences, Multidisciplinary
B. Jimenez-Esteve, K. Kornhuber, D. I. Domeisen
Summary: Research shows that amplified Rossby waves and preferred longitudinal locations are associated with concurrent heatwaves. Dry atmospheric dynamics and topography play a critical role in causing synchronous heatwaves.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Editorial Material
Energy & Fuels
Susan Schorr
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Energy & Fuels
Santhanu Panikar Ramanandan, Andrea Giunto, Elias Z. Stutz, Benoit Reynier, Ileane Tiphaine Francoise Marie Lefevre, Marin Rusu, Susan Schorr, Thomas Unold, Anna Morral, Jose A. Marquez, Mirjana Dimitrievska
Summary: This work explores the synthesis of BaZrS3 from Ba-Zr-O oxide precursor films sulfurized at temperatures ranging from 700 degrees C to 1000 degrees C. The diffusion of sulfur species in the film is identified as the rate-limiting step of this reaction. The processing temperature plays a significant role in determining the conversion from oxide to sulfide phase. BaZrS3 demonstrates a unique ability to accommodate non-stoichiometric compositions, unlike other chalcogenides.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Sijie Ge, Han Xu, Tao Wang, Ening Gu, Xianzhong Lin, Guowei Yang
Summary: Although the efficiency of CZTSSe thin film solar cell has exceeded 13%, the deposition method used is not cost-effective and efficient. This study reports the use of scalable inkjet printing method in ambient air to deposit high-quality CZTSSe thin film absorber. CZTSSe devices with the highest efficiency achieved through inkjet printing method, demonstrating the potential of inkjet printing for cost-effective CZTSSe solar cells fabrication.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Konrad Ritter, Galina Gurieva, Stefanie Eckner, Rene Schwiddessen, Francesco d'Acapito, Edmund Welter, Susan Schorr, Claudia S. Schnohr
Summary: This study investigates the local atomic structure of off-stoichiometric kesterite materials and analyzes the influence of off-stoichiometry on bond stretching force constants, average bond lengths, and variances. The findings provide insight into the possible local configurations and their impact on the electronic properties and application of kesterites in solar cells.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Correction
Multidisciplinary Sciences
Efi Rousi, Kai Kornhuber, Goratz Beobide-Arsuaga, Fei Luo, Dim Coumou
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Kai Kornhuber, Corey Lesk, Carl F. Schleussner, Jonas Jaegermeyr, Peter Pfleiderer, Radley M. Horton
Summary: Simultaneous harvest failures across major crop-producing regions are major threats to global food security. The ability of climate and crop models to reproduce and estimate risks from these events is crucial, but currently underestimated.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Samuel Bartusek, Kai Kornhuber, Mingfang Ting
Summary: The heat conditions in North America during the summer of 2021 surpassed previous heatwaves, an occurrence that many would have considered impossible under current climate conditions. The severity of this heat event was amplified by interactions between atmospheric circulation, regional soil moisture deficiency, and nonlinear drivers, potentially driven by long-term regional warming and soil drying. Global warming has transformed the likelihood of such events, with a projected increase in frequency as global temperatures continue to rise.
NATURE CLIMATE CHANGE
(2022)
Article
Geosciences, Multidisciplinary
L. Gloege, K. Kornhuber, O. Skulovich, I Pal, S. Zhou, P. Ciais, P. Gentine
Summary: A heatwave in Siberia in January 2020, caused by a wave 5 pattern in the jet stream, had significant impacts on ecosystems and water resources. Positive temperature anomalies led to early snowmelt, accelerated vegetation growth, decreased soil moisture, and increased the impact of the heatwave on the atmosphere through a land-atmosphere feedback. This event highlights the importance of both atmospheric dynamics and land-atmosphere interactions in the future as the climate changes.
Article
Chemistry, Physical
Joachim Breternitz, Susan Schorr
Summary: Zinc-containing ternary nitrides have great potential as light-absorbing materials, and the incorporation of oxygen affects their crystal structure and optical band gaps. This study explores the origins of structural changes and investigates the electronic structure and bonding.
FARADAY DISCUSSIONS
(2022)
