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2021年全球风能和太阳能发电量占比首次超过10% 快报文章
气候变化快报,2022年第20期
作者:  廖琴
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:762/0  |  提交时间:2022/10/20
Power Transition  Renewable Energy Sources  
Enhanced ferroelectricity in ultrathin films grown directly on silicon 期刊论文
NATURE, 2020, 580 (7804) : 478-+
作者:  Arnold, Fabian M.;  Weber, Miriam S.;  Gonda, Imre;  Gallenito, Marc J.;  Adenau, Sophia;  Egloff, Pascal;  Zimmermann, Iwan;  Hutter, Cedric A. J.;  Huerlimann, Lea M.;  Peters, Eike E.;  Piel, Joern;  Meloni, Gabriele;  Medalia, Ohad;  Seeger, Markus A.
收藏  |  浏览/下载:64/0  |  提交时间:2020/07/03

Ultrathin ferroelectric materials could potentially enable low-power perovskite ferroelectric tetragonality logic and nonvolatile memories(1,2). As ferroelectric materials are made thinner, however, the ferroelectricity is usually suppressed. Size effects in ferroelectrics have been thoroughly investigated in perovskite oxides-the archetypal ferroelectric system(3). Perovskites, however, have so far proved unsuitable for thickness scaling and integration with modern semiconductor processes(4). Here we report ferroelectricity in ultrathin doped hafnium oxide (HfO2), a fluorite-structure oxide grown by atomic layer deposition on silicon. We demonstrate the persistence of inversion symmetry breaking and spontaneous, switchable polarization down to a thickness of one nanometre. Our results indicate not only the absence of a ferroelectric critical thickness but also enhanced polar distortions as film thickness is reduced, unlike in perovskite ferroelectrics. This approach to enhancing ferroelectricity in ultrathin layers could provide a route towards polarization-driven memories and ferroelectric-based advanced transistors. This work shifts the search for the fundamental limits of ferroelectricity to simpler transition-metal oxide systems-that is, from perovskite-derived complex oxides to fluorite-structure binary oxides-in which '  reverse'  size effects counterintuitively stabilize polar symmetry in the ultrathin regime.


Enhanced switchable ferroelectric polarization is achieved in doped hafnium oxide films grown directly onto silicon using low-temperature atomic layer deposition, even at thicknesses of just one nanometre.


  
Solar lobby and energy transition in Japan 期刊论文
ENERGY POLICY, 2019, 134
作者:  Li, Aitong;  Xu, Yuan;  Shiroyama, Hideaki
收藏  |  浏览/下载:30/0  |  提交时间:2020/02/17
Energy transition  Solar PV  Wind power  Political economy  Fulcushima nuclear accident  Japan  
Policy change, power and the development of Great Britain's Renewable Heat Incentive 期刊论文
ENERGY POLICY, 2019, 131: 410-421
作者:  Lowes, Richard;  Woodman, Bridget;  Fitch-Roy, Oscar
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/27
Heat  Policy  Power  Lobbying  Socio-technical transition  
Should BIPV technologies be empowered by innovation policy mix to facilitate energy transitions? - Revealing stakeholders' different perspectives using Q methodology 期刊论文
ENERGY POLICY, 2019, 129: 307-318
作者:  Chang, Ruidong;  Cao, Yuan;  Lu, Yujie;  Shabunko, Veronika
收藏  |  浏览/下载:20/0  |  提交时间:2019/11/26
Renewable energy  Solar power  Sustainability transition  Energy transition  Energy policy  Innovation policy  
The 'patchy' spread of renewables: A socio-territorial perspective on the energy transition process 期刊论文
ENERGY POLICY, 2019, 129: 684-692
作者:  Carrosio, Giovanni;  Scotti, Ivano
收藏  |  浏览/下载:12/0  |  提交时间:2019/11/26
Energy transition  Heating network systems  Social networks  Technical networks  Techno-institutional complex  Wind power facilities  
The green flings: Norwegian oil and gas industry's engagement in offshore wind power 期刊论文
ENERGY POLICY, 2019, 127: 269-279
作者:  Makitie, Tuukka;  Normann, Hakon E.;  Thune, Taran M.;  Gonzalez, Jakoba Sraml
收藏  |  浏览/下载:19/0  |  提交时间:2019/11/26
Sustainable energy transition  Organizational environment  Oil and gas industry  Offshore wind power  Norway  
Developing a roadmap to a flexible, low-carbon Indian electricity system: interim findings 科技报告
来源:Climate Policy Initiative. 出版年: 2019
作者:  Udetanshu;  Brendan Pierpont;  Saarthak Khurana and David Nelson
Adobe PDF(7205Kb)  |  收藏  |  浏览/下载:56/39  |  提交时间:2020/04/16
coal  electricity  electricity markets  energy finance  energy transition  flexibility  power generation  renewable energy  solar  wind  
The spatial extent of renewable and non-renewable power generation: A review and meta-analysis of power densities and their application in the US 期刊论文
ENERGY POLICY, 2018, 123: 83-91
作者:  van Zalk, John;  Behrens, Paul
收藏  |  浏览/下载:20/0  |  提交时间:2019/04/09
Energy transition  Spatial impact  Power density  Energy systems  Land  Energy models  
Large-scale photovoltaics? Yes please, but not like this! Insights on different perspectives underlying the trade-off between land use and renewable electricity development 期刊论文
ENERGY POLICY, 2018, 122: 429-437
作者:  Spaeth, Leonhard
收藏  |  浏览/下载:15/0  |  提交时间:2019/04/09
Energy policy  Land use policy  Energy transition  Q methodology  Utility-scale solar power  Stakeholder opposition