Results 91 to 100 of about 217,009 (264)

Wafer‐Scale Synthesis of Mithrene and its Application in UV Photodetectors

Advanced Functional Materials, EarlyView.
A controlled tarnishing step on the silver surface precedes the solid‐vapor‐phase chemical transformation into silver phenylselenolate thin films. The approach yields crystals exceeding 1 µm with improved in‐plane orientation. Integration on graphene phototransistors demonstrates high photoresponsivity, positioning mithrene as a promising material for ...
Maryam Mohammadi, Stefanie L. Stoll, Analía F. Herrero, Sana Khan, Federico Fabrizi, Christian Gollwitzer, Zhenxing Wang, Surendra B. Anantharaman, Max C. Lemme   +8 more
wiley   +1 more source

High‐Rate FA‐Based Co‐Evaporated Perovskites: Understanding Rate Limitations and Practical Considerations to Overcome Their Impact

Advanced Functional Materials, EarlyView.
Vacuum‐based deposition is promising for perovskite solar cells to be successfully commercialized. However, co‐evaporation, the most common vapor phase deposition technique, suffers from very low deposition rates. In this work, we reveal that high deposition rates can lead to carbon flakes depositing into the perovskite absorber layers due to material ...
Thomas Feeney, Aleksandra Miaskiewicz, Julian Petry, Felix Laufer, Roja Singh, Stefanie Severin, Viktor Škorjanc, Alexander Diercks, Suresh Maniyarasu, Lars Korte, Steve Albrecht, Ulrich W. Paetzold, Marcel Roß, Paul Fassl   +13 more
wiley   +1 more source

Photophysics of lead-free tin halide perovskite films and solar cells

APL Materials, 2019
The last five years have seen very active research in the field of environmentally friendly lead-free perovskite solar cells. Tin halide perovskites are certainly one of the most promising alternatives to lead-based perovskites, while the performance of ...
Taketo Handa, Atsushi Wakamiya, Yoshihiko Kanemitsu   +2 more
doaj   +1 more source

Recent Research Progress on Lead-free or Less-lead Perovskite Solar Cells

International Journal of Electrochemical Science, 2017
Perovskite solar cells (PSCs) have been attracting great research interests and attained remarkable progress since its debut in 2009. Remarkably, the power conversion efficiency (PCE) of PSCs has already surpassed other types of solar cells that have ...
Qihua Li, Peixin Zhang, Lei Yao, Libo Deng, Xiangzhong Ren, Yongliang Li   +5 more
doaj   +1 more source

Highly Stable Luminous "snakes" from CsPbX3 Perovskite Nanocrystals Anchored on Amine-Coated Silica Nanowires [PDF]

, 2019
CsPbX3 (X = Cl, Br, and I) perovskite nanocrystals (NCs) are known for their exceptional optoelectronic properties, yet the material's instability toward polar solvents, heat, or UV irradiation greatly limits its further applications.
He, L, Jia, M, Jurow, MJ, Liu, Y, Pan, A, Wu, Y, Zhang, Y, Zheng, F   +7 more
core  

High-resolution remote thermography using luminescent low-dimensional tin-halide perovskites

, 2019
While metal-halide perovskites have recently revolutionized research in optoelectronics through a unique combination of performance and synthetic simplicity, their low-dimensional counterparts can further expand the field with hitherto unknown and ...
Benin, Bogdan M., Bodnarchuk, Maryna I., Cattaneo, Stefano, Dirin, Dmitry N., Hofer, Christoph, Kovalenko, Maksym V., Nazarenko, Olga, Shynkarenko, Yevhen, Yakunin, Sergii   +8 more
core   +1 more source

The Dynamics of Interfacial Trap States in High‐Detectivity Near‐Infrared Photomultiplication Organic Photodetectors

Advanced Functional Materials, EarlyView.
Photomultiplication organic photodetectors (PM OPDs) are an attractive strategy for health‐monitoring. Here, PM‐OPDs are reported with a specific detectivity of 5.7 × 1012 Jones and external quantum efficiency values of 3500% under −10 V. The dynamics of carrier trapping in these devices are elucidated through trap selective spectroscopical techniques.
Marie Houot, Zhuoran Qiao, Beier Hu, Davide Nodari, Francesco Furlan, Filip Aniés, Yicheng Yang, Martin Heeney, Artem A. Bakulin, Nicola Gasparini   +9 more
wiley   +1 more source

Single Crystal Sn-Based Halide Perovskites

Nanomaterials
Sn-based halide perovskites are expected to be the best replacement for toxic lead-based counterparts, owing to their similar ionic radii and the optimal band gap for use in solar cells, as well as their versatile use in light-emitting diodes and ...
Aditya Bhardwaj, Daniela Marongiu, Valeria Demontis, Angelica Simbula, Francesco Quochi, Michele Saba, Andrea Mura, Giovanni Bongiovanni   +7 more
doaj   +1 more source

Polarons, free charge localisation and effective dielectric permittivity in oxides

, 2010
This review will deal with several types of free charge localisation in oxides and their consequences on the effective dielectric spectra of such materials.
Maglione, Mario
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source