期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 113, 期 32, 页码 8910-8915出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1609030113
关键词
perovskite; solar cell; high pressure; band gap; carrier lifetime
资金
- National Nature Science Associate Foundation (NSAF) [U1530402]
- US National Science Foundation Grant CBET (Division of Chemical, Bioengineering, Environmental, and Transport Systems) [1150617]
- National Science Foundation Grants EAR (Division of Earth Sciences) [1128799]
- DMR (Division of Materials Research) [0936384]
- US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- National Science Foundation (Consortium for Materials Properties Research in Earth Sciences) [EAR 1606856]
- DOE/National Nuclear Security Administration [Grant DOE/National Nuclear Security Administration (NNSA)] [0002006]
- DOE/National Nuclear Security Administration [Confidentiality and Data Access Committee]
- DOE [DE-AC36-08-GO28308]
- National Nature Science Foundation of China [21428305]
- Directorate For Geosciences
- Division Of Earth Sciences [1128799] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1150617] Funding Source: National Science Foundation
The organic-inorganic hybrid lead trihalide perovskites have been emerging as the most attractive photovoltaic materials. As regulated by Shockley-Queisser theory, a formidable materials science challenge for improvement to the next level requires further band-gap narrowing for broader absorption in solar spectrum, while retaining or even synergistically prolonging the carrier lifetime, a critical factor responsible for attaining the near-band-gap photovoltage. Herein, by applying controllable hydrostatic pressure, we have achieved unprecedented simultaneous enhancement in both band-gap narrowing and carrier-lifetime prolongation (up to 70% to similar to 100% increase) under mild pressures at similar to 0.3 GPa. The pressure-induced modulation on pure hybrid perovskites without introducing any adverse chemical or thermal effect clearly demonstrates the importance of band edges on the photon-electron interaction and maps a pioneering route toward a further increase in their photovoltaic performance.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据