Results 51 to 60 of about 1,921 (222)

Chemical Mapping of Excitons in Halide Double Perovskites [PDF]

, 2023
Halide double perovskites are an emerging class of semiconductors with tremendous chemical and electronic diversity. While their bandstructure features can be understood from frontier-orbital models, chemical intuition for optical excitations remains ...
Biega, Raisa-Ioana, Chen, Yinan, Filip, Marina R., Leppert, Linn   +3 more
core   +6 more sources

Mechanochemically synthesized Pb-free halide perovskite-based Cs2AgBiBr6–Cu–RGO nanocomposite for photocatalytic CO2 reduction [PDF]

, 2021
Pb-based halide perovskites have recently showed great potential in various applications such as solar cells, optoelectronics and photocatalysis. Despite their high performance, the Pb2+ toxicity along with poor stability hinders long term applications ...
Eslava, S, Gonzalez-Carrero, S, Hassan, I, Isaacs, MA, Kumar, S, Rattner, E, Regue, M   +6 more
core  

Highly mobile hot holes in Cs₂AgBiBr₆ double perovskite [PDF]

, 2021
Highly mobile hot charge carriers are a prerequisite for efficient hot carrier optoelectronics requiring long-range hot carrier transport. However, hot carriers are typically much less mobile than cold ones because of carrier-phonon scattering.
Bonn, M., Debroye, E., Di Virgilio, L., Fu, S., Kumar, P., Wang, H., Zhang, H., Zheng, W.   +7 more
core   +2 more sources

First-principles simulation study on the impact of monovalent Cu ion doping on the crystal structure and electrical properties of lead-free perovskite Cs2AgBiBr6

He jishu
BackgroundLead-free double perovskite Cs2AgBiBr6 has garnered significant attention in the field of nuclear radiation detection as an environmentally friendly material. Experimental observations have revealed that doping Cs2AgBiBr6 with Cu+ significantly
PAN Yangxuan, LIU Yibao, WEI Qianglin, ZHANG Zixiong, LI Kaixuan   +4 more
doaj   +1 more source

Pulsed Laser Deposition of Cs2AgBiBr6: from Mechanochemically Synthesized Powders to Dry, Single-Step Deposition [PDF]

, 2021
Cs2AgBiBr6 has been proposed as a promising lead-free and stable double perovskite alternative to hybrid and lead-based perovskites. However, the low solubility of precursors during wet synthesis, or the distinct volatility of components during ...
Birkhölzer, Yorick A., Bolink, Henk, Kaal, Stan, Ledinsky, Martin, Morales-Masis, Monica, Palazón Huet, Francisco, Rodkey, Nathan, Sebastia-Luna, Paz   +7 more
core   +2 more sources

Elucidating the Factors Limiting the Photovoltaic Performance of Mixed Sb–Bi Halide Elpasolite Absorbers [PDF]

, 2022
Although Cs2AgBiBr6 halide elpasolites have gained substantial attention as potential nontoxic and stable alternatives to lead–halide perovskites, they are limited by their wide bandgaps >2.2 eV. Alloying with Sb into the pnictogen site has been shown
Joe Briscoe, Lokeshwari Mohan, Richard H. Friend, Robert L. Z. Hoye, Szymon J. Zelewski, Yi-Teng Huang, Zewei Li   +6 more
core   +2 more sources

Ultralow‐Power Machine Vision with Self‐Powered Sensor Reservoir

Advanced Science, 2022
A neuromorphic visual system integrating optoelectronic synapses to perform the in‐sensor computing is triggering a revolution due to the reduction of latency and energy consumption.
Jie Lao, Mengge Yan, Bobo Tian, Chunli Jiang, Chunhua Luo, Zhuozhuang Xie, Qiuxiang Zhu, Zhiqiang Bao, Ni Zhong, Xiaodong Tang, Linfeng Sun, Guangjian Wu, Jianlu Wang, Hui Peng, Junhao Chu, Chungang Duan   +15 more
doaj   +1 more source

Hydrogenated Cs2AgBiBr6 for High-Efficient Lead-Free Inorganic Double Perovskite Solar Cell [PDF]

, 2021
Abstract Development of the stable, lead-free inorganic perovskite material is of greatly importance on fabricating the third-generation solar cell. Until now, double perovskite, such as Cs2AgBiBr6, has been proved to be one of the most potential candidates to solve the toxicity and stability issues of traditional lead halide perovskite solar ...
Zeyu Zhang, Qingde Sun, Yue Lu, Feng Lu, Xulin Mu, Su-Huai Wei, Manling Sui   +6 more
openaire   +1 more source

Enhancing efficiency in double perovskite solar cells through bandgap reduction via organic polymer doping

Results in Chemistry
The films of polypyrrole (PPy) doped with Cs2AgBiBr6, lead-free halide double perovskite (LFHDP), have been synthesized through a sol–gel method. The X-ray diffraction (XRD) analysis showed the effective doping of PPy, which resulted in larger grain ...
Ihtisham-ul-Haq, M.I. Khan, Ali Mujtaba, Asad Ullah, Badriah Ali, Muhammad Atif, M.S. Hasan   +6 more
doaj   +1 more source

Heteroepitaxial passivation of Cs2AgBiBr6 wafers with suppressed ionic migration for X-ray imaging

Nature Communications, 2019
Ionic migration degrades not only the characteristics of halide perovskite solar cells, but also those of perovskite X-ray detectors. Here Yang et al.
Bo Yang, Weicheng Pan, Haodi Wu, Guangda Niu, Jun-Hui Yuan, Kan-Hao Xue, Lixiao Yin, Xinyuan Du, Xiang-Shui Miao, Xiaoquan Yang, Qingguo Xie, Jiang Tang   +11 more
doaj   +1 more source