Results 1 to 10 of about 1,361 (209)

Unravelling ultralow thermal conductivity in perovskite Cs2AgBiBr6: dominant wave-like phonon tunnelling and strong anharmonicity

npj Computational Materials, 2023
Understanding the lattice dynamics and heat transport physics in the lead-free halide double perovskites remains an outstanding challenge due to their lattice dynamical instability and strong anharmonicity.
Jiongzhi Zheng, Changpeng Lin, Chongjia Lin, Geoffroy Hautier, Ruiqiang Guo, Baoling Huang   +5 more
doaj   +2 more sources

MXene‐Engineered Cs2AgBiBr6 Perovskite Solar Cells: Rational Screening and Interfacial Dynamics for Lead‐Free Photovoltaics [PDF]

Advanced Science
MXenes have demonstrated exceptional performance in energy applications, yet their potential in photovoltaic systems, particularly in lead‐free perovskite solar cells (PSCs), remains underexplored, with no strategic studies addressing how MXene ...
Lin Yang, Tianfang Zheng, Ziyan Liu, Naoyuki Shibayama, Peng Li, Jiangang Ma, Xintong Zhang, Hancheng Zhu, Xiao‐Feng Wang, Haiyang Xu, Yichun Liu   +10 more
doaj   +2 more sources

Noble Metals Doping in Lead‐Free Double Perovskite Single Crystals: Achieving Near‐Infrared to X‐ray Broadband Photodetection [PDF]

Small Science
Semiconductor materials capable of broadband photodetection, spanning X‐rays to near‐infrared (NIR), are essential for applications in medical imaging, industrial inspection, security, and telecommunications.
Donato Valli, Roel Vanden Brande, Vincent Herreman, Qianrui Li, Giacomo Romolini, Jim Jui‐Kai Chen, Muhammed Shameem K. M., Bob Van Hout, Li Sun, Qing Zhao, Bapi Pradhan, Johan Hofkens, Elke Debroye   +12 more
doaj   +2 more sources

Cs2AgBiBr6 and related Halide double perovskite porous single crystals [PDF]

Scientific Reports
The utilization of single crystals is exponentially growing in optoelectronic devices due to their exceptional benefits, including high phase purity and the absence of grain boundaries.
Maurya Sandeep Pradeepkumar, Aruchamy Kathirvel, Sayan Ghosh, Chandran Sudakar   +3 more
doaj   +2 more sources

Physical parameter optimization and band alignment approach for efficiency improvement in Cs2AgBiBr6 based lead-free perovskite solar cells [PDF]

Scientific Reports
In recent years, organic-inorganic halide perovskite solar cells (PSCs) have garnered significant global attention due to their exceptional performance and high-power conversion efficiency (PCE).
Abhishek Raj, Manish Kumar, Dharm Veer Singh, Bhupendra Singh, D. K. Dwivedi, Avneesh Anshul   +5 more
doaj   +2 more sources

Progress and opportunities in bismuth-based materials for X-ray detection. [PDF]

MRS Energy Sustain
Over the past decade, lead halide perovskites have gained significant interest for ionizing radiation detection, owing to their exceptional performance, and cost-effective fabrication in a wide range of form factors, from thick films to large single ...
Ghosh J, Priyadarshini P, Younus ZT, Jia Q, Nie W, MacManus-Driscoll JL, Hoye RLZ.   +6 more
europepmc   +3 more sources

Interfacial Structural Transformation for the Synthesis of Lead‐Free Double Perovskite Nanocrystals [PDF]

Advanced Science
Lead‐free halide double perovskite nanocrystals have emerged as one of the most promising alternatives to lead halide perovskite nanocrystals due to their non‐toxicity, high stability, and outstanding optoelectronic properties.
Jun Liu, Anna A Vedernikova, Qi Xue, Huiying Gao, Xiuhui Xie, Jinfeng Xie, Elena V Ushakova, He Huang, Xiaohong Zhang   +8 more
doaj   +2 more sources

Dimensional reduction in Cs2AgBiBr6 enables long-term stable Perovskite-based gas sensing [PDF]

Nature Communications
Halide perovskite gas sensors have a low gas detection limit at room temperature, surpassing the performance of traditional metal oxide chemiresistors.
Wen Ye, Hong-Zhen Lin, Menglong Li, Lihua Jiang, Dongyun Chen, Jian-Mei Lu   +5 more
doaj   +2 more sources

Structural distortions control scaling of exciton binding energies in two-dimensional Ag/Bi double perovskites. [PDF]

Nanoscale
Three-dimensional metal halide double perovskites such as Cs2AgBiBr6 exhibit pronounced excitonic effects due to their anisotropic electronic structure and chemical localization effects.
Lechifflart P, Biega RI, Leppert L.
europepmc   +3 more sources

Halide Mixing in Cs₂AgBi(I _x Br_1-x )₆ Double Perovskites: A Pathway to Tunable Excitonic Properties. [PDF]

J Phys Chem C Nanomater Interfaces
Cs2AgBiBr6 is an emerging double perovskite semiconductor with robust stability. However, its potential for photovoltaics is limited by its indirect band gap and localized electronic structure featuring a resonant exciton with a large binding energy ...
Biega RI, Jöbsis HJ, Gijsberg Z, Hüskens M, Hutter EM, Leppert L.   +5 more
europepmc   +4 more sources