Article
Multidisciplinary Sciences
Changhwan Lee, Emma Z. Z. Xu, Kevin W. C. Kwock, Ayelet Teitelboim, Yawei Liu, Hye Sun Park, Benedikt Ursprung, Mark E. E. Ziffer, Yuzuka Karube, Natalie Fardian-Melamed, Cassio C. S. Pedroso, Jongwoo Kim, Stefanie D. D. Pritzl, Sang Hwan Nam, Theobald Lohmueller, Jonathan S. S. Owen, Peter Ercius, Yung Doug Suh, Bruce E. E. Cohen, Emory M. M. Chan, P. James Schuck
Summary: Photoswitchable probes, such as organic fluorophores and proteins, have limitations including photodegradation and operation only in UV or visible spectral regions. This study introduces avalanching nanoparticles (ANPs) that can be switched bidirectionally with near-infrared (NIR) light, offering improved stability. The mechanism of the photoswitching process is elucidated through modeling and measurement of the photon avalanche properties of single ANPs. The unlimited, reversible photoswitching of ANPs enables multilevel optical patterning and sub-A localization superresolution optical nanoscopy.
Article
Chemistry, Physical
Saptarshi Mandal, Swarnali Ghosh, Soumen Mukherjee, Debjit Roy, Chayan K. De, Kingshuk Mukhuti, Prasun K. Mandal
Summary: The study demonstrates that CsPbBr3 perovskite nanocrystals exhibit high optical robustness and the ability to depict ensemble optical behavior, which are crucial for their prospective applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Philipp Storm, Susanne Selle, Holger von Wenckstern, Marius Grundmann, Michael Lorenz
Summary: Transparent, p-type semiconductor copper iodide (CuI) thin films were grown via pulsed laser deposition on SrF2(111) using water soluble sacrificial layers of sodium bromide (NaBr). The resulting CuI thin films are single crystalline with reduced surface roughness compared to epitaxial CuI grown with rotational domains on other templates. The CuI thin films were subsequently transferred onto glass using epoxy/glue and dissolution of NaBr in a water-vapor atmosphere.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Soumen Mukherjee, Swarnali Ghosh, Dibyendu Biswas, Mainak Ghosal, Kheyali De, Prasun K. Mandal
Summary: Zn-alloyed CsPb(Cl/Br)(3) perovskite nanocrystals (PNCs) were synthesized and used as a model system for Mn doping to study the effect of Mn doping on exciton dynamics. The radiative decay rate of the host band decreased by about 6.5 times and the non-radiative decay rate increased by about 2.5 times upon Mn doping, while keeping the PL emission maximum and PLQY of both PNC samples nearly the same. Unlike previous reports, the integrated PL intensity of the dopant emission in this case increased by about 5.5-fold when the temperature decreased from 290 K to 190 K. The presence of shallow trap states was responsible for the truncation in the PDDs of both ON and OFF events for PNC1, whereas the deep dopant states did not allow truncation in the host PL emission of PNC2.
Correction
Engineering, Electrical & Electronic
J. F. Cheng, X. Li, X. M. Shao, T. Li, Y. J. Ma, Y. Gu, S. Y. Deng, Y. G. Zhang, H. M. Gong
Summary: The above article discusses the affiliations of the authors.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Kihoon Kim, Zachary M. Sherman, Angela Cleri, Woo Je Chang, Jon-Paul Maria, Thomas M. Truskett, Delia J. Milliron
Summary: By continuously varying doping at two length scales, the atomic and nanocrystal scales, the frequency and bandwidth of the collective plasmon resonance in nanocrystal-based metasurfaces can be tuned, leading to the emergence of a broad infrared spectral region with near-zero permittivity. This multiscale doping strategy offers a powerful approach to designing metamaterials for optical applications.
Article
Chemistry, Multidisciplinary
Dongxu Zhu, Fulvio Bellato, Houman Bahmani Jalali, Francesco Di Stasio, Mirko Prato, Yurii P. Ivanov, Giorgio Divitini, Ivan Infante, Luca De Trizio, Liberato Manna
Summary: This study investigates the role of ZnCl2 as an additive in the synthesis of InAs nanocrystals (NCs) using tris(dimethylamino)arsine. It is found that ZnCl2 not only improves the size distribution of InAs NCs, but also acts as a ligand to passivate their surface. The addition of a Zn precursor enables the subsequent growth of a ZnSe shell, resulting in InAs@ZnSe core@shell NCs with high quantum yield.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Computer Science, Information Systems
Ahid S. Hajo, Sascha Preu, Leonid Kochkurov, Thomas Kusserow, Oktay Yilmazoglu
Summary: This study investigates fully integrated THz detectors using silver NWs as bridge contacts on highly doped GaAs and InGaAs layers, achieving improved performance at zero bias with a maximum cut-off frequency of 2.6 THz. Initial THz measurements suggest a responsivity of 0.81 A/W and low NEP value of 7 pW/root Hz at 1 THz.
Article
Chemistry, Physical
Tomi Koskinen, Vladislav Khayrudinov, Fahimeh Emadi, Hua Jiang, Tuomas Haggren, Harri Lipsanen, Ilkka Tittonen
Summary: The study characterized the thermoelectric properties of InAs nanowire networks directly grown on plastic substrates, showing high thermoelectric performance and mechanical flexibility at room temperature. The established thermoelectric performance of these nanowire networks on plastic substrates provides hope for the development of flexible thermoelectric applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Pan Xia, Bin Sun, Margherita Biondi, Jian Xu, Ozan Atan, Muhammad Imran, Yasser Hassan, Yanjiang Liu, Joao M. Pina, Amin Morteza Najarian, Luke Grater, Koen Bertens, Laxmi Kishore Sagar, Husna Anwar, Min-Jae Choi, Yangning Zhang, Minhal Hasham, F. Pelayo Garcia de Arquer, Sjoerd Hoogland, Mark W. B. Wilson, Edward H. Sargent
Summary: This research reports a novel co-passivation strategy for fabricating indium arsenide CQD photodetectors, which maintains charge carrier mobility and improves passivation by using methyl ammonium acetate and indium chloride as ligands, resulting in a doubling of the photoluminescence lifetime. The resulting devices achieved a 37% external quantum efficiency (EQE) at 950 nm, the highest reported value for InAs CQD photodetectors.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sergey V. Balakirev, Natalia E. Chernenko, Mikhail M. Eremenko, Oleg A. Ageev, Maxim S. Solodovnik
Summary: This study proposes a new approach to control the size of nanostructures formed by droplet epitaxy using ultra-low group-V flux. It demonstrates that larger droplets can be reduced to stable, small-sized nanostructures suitable for quantum dot applications, while smaller droplets are unstable and difficult to control. The research expands the capabilities of droplet epitaxy by observing phenomena related to the transformation of droplets into dots, rings, and holes under specific growth conditions.
Article
Chemistry, Multidisciplinary
Zheming Liu, Roberta Pascazio, Luca Goldoni, Daniela Maggioni, Dongxu Zhu, Yurii P. P. Ivanov, Giorgio Divitini, Jordi Llusar Camarelles, Houman Bahmani Jalali, Ivan Infante, Luca De Trizio, Liberato Manna
Summary: We successfully synthesized colloidal InAs nanocrystals (NCs) using amino-As and ligands different from the commonly employed oleylamine (OA). The combination of TOA and OA allowed for good control over the size distribution of the InAs NCs, with a volume ratio of 4:1 generating InAs tetrapods with arm lengths of 5-6 nm. These NCs are entirely zinc-blende and have a narrow excitonic peak at 950 nm in absorption. The use of mixtures of ligands improves control over the size and size distribution of InAs NCs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Yanting Kong, Rong Ma, Bin Shen, Qingnan Yu
Summary: In this paper, a simple and effective detection method for the thickness fluctuation of InGaAs layers in InxGa1-xAs-based IRC structure is proposed through point-to-point acquisition. The relationship between InxGa1-xAs thickness and spectral intensity is established, and the thickness fluctuation of normal and indium-deficient InGaAs layers is determined by comparing the intensity of dual peaks, which are caused by indium atom migration.
IEEE PHOTONICS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Xiayan Wu, Shun Omagari, Jinwei Gao, Martin Vacha
Summary: Combining all-inorganic perovskites with metal-organic frameworks shows promise for optoelectronic applications. This study examines the effect of the local ionic environment on the crystallization kinetics and photoluminescence properties of CsPbX3-MOF composites. Real-time monitoring reveals compositional heterogeneity in the embedded mixed halogen perovskites, which is a result of the local ionic environment of individual nanocrystals.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xiayan Wu, Shun Omagari, Jinwei Gao, Martin Vacha
Summary: Studied CsPbX3-MOF composites based on twinned Pb-X-based MOFs to investigate the crystallization kinetics and photoluminescence (PL) properties. Found a large compositional heterogeneity in the embedded mixed halogen perovskites, which is a dynamic phenomenon with spectral fluctuations of individual nanocrystals on the time scales of tens of seconds under excitation. In addition, compositional changes correlated over distances of micrometers indicate collective ionic diffusion in the system. In situ PL spectroscopy provides unique insights into the fundamental photophysical properties and feedback for further development and potential applications of perovskite-MOF composites.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Elizabeth S. Levy, Cheryl A. Tajon, Thomas S. Bischof, Pan Iafrati, Angel Fernandez-Bravo, David J. Garfield, Maysamreza Chamanzar, Michel M. Maharbiz, Vikaas S. Sohal, P. James Schuck, Bruce E. Cohen, Emory M. Chan
Article
Chemistry, Multidisciplinary
Justin R. Caram, Sophie N. Bertram, Hendrik Utzat, Whitney R. Hess, Jessica A. Carr, Thomas S. Bischof, Andrew P. Beyler, Mark W. B. Wilson, Moungi G. Bawendi
Article
Optics
Thomas S. Bischof, Justin R. Caram, Andrew P. Beyler, Moungi G. Bawendi
Article
Nanoscience & Nanotechnology
Russell A. Jensen, I-Chun Huang, Ou Chen, Jennifer T. Choy, Thomas S. Bischof, Marko Loncar, Moungi G. Bawendi
Article
Engineering, Biomedical
Oliver T. Bruns, Thomas S. Bischof, Daniel K. Harris, Daniel Franke, Yanxiang Shi, Lars Riedemann, Alexander Bartelt, Frank B. Jaworski, Jessica A. Carr, Christopher J. Rowlands, Mark W. B. Wilson, Ou Chen, He Wei, Gyu Weon Hwang, Daniel M. Montana, Igor Coropceanu, Odin B. Achorn, Jonas Kloepper, Joerg Heeren, Peter T. C. So, Dai Fukumura, Klavs F. Jensen, Rakesh K. Jain, Moungi G. Bawendi
NATURE BIOMEDICAL ENGINEERING
(2017)
Article
Chemistry, Multidisciplinary
Katherine E. Shulenberger, Thomas S. Bischof, Justin R. Caram, Hendrik Utzat, Igor Coropceanu, Lea Nienhaus, Moungi G. Bawendi
Review
Chemistry, Multidisciplinary
Jian Cui, Andrew P. Beyler, Thomas S. Bischof, Mark W. B. Wilson, Moungi G. Bawendi
CHEMICAL SOCIETY REVIEWS
(2014)
Article
Chemistry, Multidisciplinary
Andrew P. Beyler, Thomas S. Bischof, Jian Cui, Igor Coropceanu, Daniel K. Harris, Moungi G. Bawendi
Article
Chemistry, Physical
Nicholas J. Thompson, Mark W. B. Wilson, Daniel N. Congreve, Patrick R. Brown, Jennifer M. Scherer, Thomas S. Bischof, Mengfei Wu, Nadav Geva, Matthew Welborn, Troy Van Voorhis, Vladimir Bulovic, Moungi G. Bawendi, Marc A. Baldo
Article
Chemistry, Physical
Yun Bai, Michael Sekita, Martin Schmid, Thomas Bischof, Hans-Peter Steinrueck, J. Michael Gottfried
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2010)
Article
Chemistry, Multidisciplinary
Emily D. Cosco, Bernardo A. Arus, Anthony L. Spearman, Timothy L. Atallah, Irene Lim, Olivia S. Leland, Justin R. Caram, Thomas S. Bischof, Oliver T. Bruns, Ellen M. Sletten
Summary: The use of brighter polymethine dyes with varied excitation wavelengths in SWIR imaging has expanded multiplexing capabilities. The newly developed chromenylium polymethine dyes exhibit reduced nonradiative rates and enhanced emissive properties.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Biochemical Research Methods
Venu G. Bandi, Michael P. Luciano, Mara Saccomano, Nimit L. Patel, Thomas S. Bischof, Jakob G. P. Lingg, Peter T. Tsrunchev, Meredith N. Nix, Bastian Ruehle, Chelsea Sanders, Lisa Riffle, Christina M. Robinson, Simone Difilippantonio, Joseph D. Kalen, Ute Resch-Genger, Joseph Ivanic, Oliver T. Bruns, Martin J. Schnermann
Summary: Through rational design, red-shifted, bioconjugatable heptamethine cyanine dyes were developed for multiplexed in vivo imaging in the shortwave-infrared/near-infrared-II region. The use of wavelengths between 1,000 and 2,000 nm enables high-resolution in vivo imaging at depths not possible with conventional optical wavelengths. Recent progress has shown a lack of bioconjugatable probes for imaging in the shortwave-infrared or near-infrared (NIR)-II range.
