2013年11月30日 Nature

nero1981

2013年11月30日 Nature1 r5 |: Z4 A7 M+ R7 o: T: z5 E! v- Q
About the cover% ~6 H# l4 e) r! I8 u: u
The cover illustrates an oxide crystal generating electric current from incoming light. The spontaneous electrical polarization that characterizes a ferroelectric material is attractive for solar-cell applications as the positive and negative charges generated by light absorption have a natural tendency to separate, making them easier to harvest efficiently. Unfortunately most known ferroelectrics have wide electronic bandgaps — that is they absorb only higher energy photons that make up a small fraction of the solar spectrum. Ilya Grinberg and colleagues now show that a classic ferroelectric can be chemically engineered to tune the bandgap over a broad range, achieving strong absorption and photocurrent generation across the solar spectrum. (Cover by Felice Macera)
* A1 D: l( K  k2 g
; O1 `7 N$ c4 s; K& K

游客，如果你要查看本帖隐藏内容请回复

懵懂干细胞

感谢元老分享

猴面包

thanks

sea200k

谢谢分享  ?5 ~- s! N# C6 K7 x

thinktank

谢谢。' B. U* E9 T7 v+ F0 |- L1 k

Boas

谢谢楼主分享。

pujvzi

thanks

sysuhoo

谢谢分享

xiangchou812

感谢分享！！！

read4011

. n# M3 T# ]; j. W$ l
感谢元老分享