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Illusionist

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[交流] H取代O,是SnO2本征n型的原因!《文献学习》PRL 101, 055502 (2008)

Sources of Electrical Conductivity in SnO2

即使对这个不是很了解也可以谈谈相关的见解,毕竟小木虫平台使得身处不同地方的我们可以自由地交流,如果到这里只是为了几个金币,就是失去了交流   物理/技术 的本意了········

关于Ho的形成能,Ho+在Ef-Ev=0处算的-0.5eV。但是Ho在Ef-Ev=0处算得1.9eV。
如图:


和文献报道的不一样。文献中,在整个0-3.6eV范围里,Ho等形成能应该都是大于Ho+的。
求指导




[ Last edited by Illusionist on 2012-7-14 at 08:30 ]
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Illusionist

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VOLUME 85, NUMBER 5 PHYSICAL REVIEW LETTERS  2000
Hydrogen as a Cause of Doping in Zinc Oxide


Figure 2 shows that H1 is the lowest energy state over
the entire range of Fermi-level positions within the theo-
retical LDA band gap (indicated with a dotted line in
Fig. 2). We will now argue that H1 remains the lowest en-
ergy state throughout the experimental band gap. Careful
inspection of band structures and wave functions indeed
indicates that hydrogen does not induce any defect level
in the band gap; rather, the lowest conduction bands ac-
quire a certain degree of hydrogen character, indicative of
a hydrogen-induced resonance above the conduction-band
minimum. Electrons placed in this resonance, of course,
relax to the conduction-band minimum, where they can be
bound to the donor in a hydrogenic state [10]. Our analy-
sis indicates that all the relevant conduction-band states
shift upwards when the LDA band gap is adjusted. This
behavior can be deduced from the pressure dependence of
the Kohn-Sham states, as well as from a comparison of
the nlcc calculations with results that explicitly include the
3d electrons [10]. The formation energies of H0
and H2
shown in Fig. 2 were obtained by placing electrons in the
next available unoccupied state—which turns out to be es-
sentially the conduction-bandminimum. When corrections
to the LDA band gap are applied, these formation energies
will therefore increase relative to that of H1. The Fermi-
level position where the formation energies of H1 and H0
are equal (i.e., the donor level) will remain at or above the
conduction-band minimum, and similarly for the acceptor
level.


[ Last edited by Illusionist on 2012-7-17 at 11:02 ]
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Illusionist(金币+2): 谢谢参与
这个不知道。学习了
2楼2012-07-13 14:50:59
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bestlike

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Illusionist(金币+2): 谢谢参与
Illusionist: 取消置顶 2012-07-17 10:18:55
比较前沿,希望大家多多讨论!
6楼2012-07-13 15:35:38
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凡龙

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Illusionist(金币+2): 谢谢参与
xueht987: 金币-2, 屏蔽内容 2012-07-16 14:14:28
Illusionist: 取消置顶 2012-07-17 10:18:59
本帖内容被屏蔽

13楼2012-07-13 16:48:26
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简单回复
2012-07-13 15:48   回复  
Illusionist(金币+2): 谢谢参与
xueht987: 金币-2, 非水区,拒绝灌水!拒绝纯表情帖,谢谢合作! 2012-07-16 14:16:47
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