Results 81 to 90 of about 45,849 (259)

Lead-free perovskite solar cells using Sb and Bi-based A3B2X9 and A3BX6 crystals with normal and inverse cell structures

Nano Convergence, 2017
Research of CH3NH3PbI3 perovskite solar cells had significant attention as the candidate of new future energy. Due to the toxicity, however, lead (Pb) free photon harvesting layer should be discovered to replace the present CH3NH3PbI3 perovskite.
Ajay Kumar Baranwal, Hideaki Masutani, Hidetaka Sugita, Hiroyuki Kanda, Shusaku Kanaya, Naoyuki Shibayama, Yoshitaka Sanehira, Masashi Ikegami, Youhei Numata, Kouji Yamada, Tsutomu Miyasaka, Tomokazu Umeyama, Hiroshi Imahori, Seigo Ito   +13 more
doaj   +1 more source

Exploring the Way to Approach the Efficiency Limit of Perovskite Solar Cells by Drift-Diffusion Model

, 2017
Drift-diffusion model is an indispensable modeling tool to understand the carrier dynamics (transport, recombination, and collection) and simulate practical-efficiency of solar cells (SCs) through taking into account various carrier recombination losses ...
Choy, Wallace C. H., Ren, Xingang, Sha, Wei E. I., Wang, Zishuai   +3 more
core   +2 more sources

High‐Entropy Perovskite Nanofibers for Bifunctional Air Electrodes in Reversible Protonic Ceramic Electrochemical Cells

Advanced Functional Materials, EarlyView.
High‐entropy perovskite nanofibers serve as robust and active bifunctional air electrodes in reversible protonic ceramic electrochemical cells. Their compositional complexity stabilizes the lattice, enriches oxygen vacancies, and accelerates surface exchange.
Hyeonggeun Kim, Incheol Jeong, Seeun Oh, Dongyeon Kim, Kang Taek Lee   +4 more
wiley   +1 more source

High performance of mixed halide perovskite solar cells: role of halogen atom and plasmonic nanoparticles on the ideal current density of cell

, 2017
To be able to increase the efficiency of perovskite solar cells which is one of the most substantial challenges ahead in photovoltaic industry, the structural and optical properties of perovskite CH3NH3PbI3-xBrx for values x=1-3 have been studied ...
Mohebpour, Mohammad Ali, Saffari, Mohaddeseh, Soleimani, Hamid Rahimpour, Tagani, Meysam Bagheri   +3 more
core   +1 more source

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

Controlled Synthesis of Organic/Inorganic van der Waals Solid for Tunable Light-matter Interactions

, 2015
Van der Waals (vdW) solids, as a new type of artificial materials that consist of alternating layers bonded by weak interactions, have shed light on fascinating optoelectronic device concepts.
Chang, Tay Rong, Cong, Chunxiao, Fu, Qundong, Fu, Wei, He, Haiyong, Jeng, Horng Tay, Jin, Chuanhong, Lin, Hsin, Liu, Xinfeng, Liu, Zheng, Najmaei, Sina, Niu, Lin, Sum, Tze Chien, Tay, Beng Kang, Wang, Hong, Wang, Xingli, Wu, Chunyang, Wu, Di, Yakobson, Boris I., Yu, Peng, Yu, Ting, Zeng, Qingsheng, Zhang, Zhuhua, Zhou, Jiadong, Zhou, Wu   +24 more
core   +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

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

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

Theoretical Analysis of Power Conversion Efficiency of Lead-Free Double-Perovskite Cs₂TiBr₆ Solar Cells with Different Hole Transport Layers

Eng
In recent years, there has been significant investigation into the high efficiency of perovskite solar cells. These cells have the capacity to attain efficiencies above 14%.
Vivek Bhojak, Praveen Kumar Jain
doaj   +1 more source