24小时热门版块排行榜    

查看: 3199  |  回复: 22
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

yssyc

金虫 (正式写手)

[求助] GaAs材料掺杂问题 求助!!!!!!

GaAs材料中掺硅材料可不可以改变禁带宽度呢???有没有软件可以仿真不同掺杂材料和浓度对材料禁带的影响啊??????????
回复此楼

» 猜你喜欢

» 本主题相关商家推荐: (我也要在这里推广)

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

condensed

木虫 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★
yssyc: 金币+9, ★★★很有帮助, u r so kind 金币都给你! 2012-05-10 15:16:54
From Wikipedia, the free encyclopedia
Jump to: navigation, search

In metallurgy, Vegard's law is an approximate empirical rule which holds that a linear relation exists, at constant temperature, between the crystal lattice parameter of an alloy and the concentrations of the constituent elements. [1] [2]

For example, consider the semiconductor compound InPxAs1-x. A relation exists between the constituent elements and their associated lattice parameters, \mathit{a}, such that:

\mathit{a}_{InPAs} = \mathit{x}\mathit{a}_{InP} + (1-\mathit{x})\mathit{a}_{InAs}

One can also extend this relation to determine semiconductor band gap energies. Using InPxAs1-x as before one can find an expression that relates the band gap energies, \mathit{E_g}, to the ratio of the constituents and a bowing parameter \mathit{b}:

\mathit{E_g}_{InPAs} = \mathit{x}\mathit{E_g}_{InP}+(1-\mathit{x})\mathit{E_g}_{InAs}-\mathit{bx}(1-\mathit{x})

When variations in lattice parameter are very small across the entire composition range, Vegard's law becomes equivalent to Amagat's law.

References

    ^ L. Vegard. Die Konstitution der Mischkristalle und die Raumfüllung der Atome. Zeitschrift für Physik, 5:17, 1921.
    ^ Harvard.edu A. R. Denton and N. W. Ashcroft. Vegard’s law. Phys. Rev. A, 43:3161–3164, March 1991.
13楼2012-05-10 00:27:20
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 23 个回答

didadida321

金虫 (正式写手)

【答案】应助回帖

★ ★
感谢参与,应助指数 +1
yssyc: 金币+1 2012-05-08 19:13:39
liliangfang: 金币+1, 谢谢交流 2012-05-09 08:39:54
貌似可以用MS进行模拟,用vasp再进行计算.
2楼2012-05-08 17:11:59
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

yssyc

金虫 (正式写手)

引用回帖:
2楼: Originally posted by didadida321 at 2012-05-08 17:11:59:
貌似可以用MS进行模拟,用vasp再进行计算.

弱弱问下MS全称是。。。没有用过额。。。
3楼2012-05-08 18:44:02
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
4楼2012-05-08 19:09:02
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 085600 英一数二272求调剂 5+6 vida_a 2026-03-01 15/750 2026-03-02 18:50 by caszguilin
[考研] 275求调剂 +6 明远求学 2026-03-01 6/300 2026-03-02 18:40 by caszguilin
[考研] 材料085601调剂 +3 多多子. 2026-03-02 3/150 2026-03-02 17:37 by yeahyou
[考研] 清华大学 材料与化工 353分求调剂 +4 awaystay 2026-03-02 5/250 2026-03-02 17:33 by yeahyou
[考研] 一志愿华中科技大学,化学专业344分,求调剂 +3 邢xing1 2026-03-02 3/150 2026-03-02 17:32 by houyaoxu
[考研] 欢迎采矿、地质、岩土、计算机、人工智能等专业的同学报考 +6 pin8023 2026-02-28 8/400 2026-03-02 17:13 by 0854蹲调剂
[考研] 材料学硕318求调剂 +9 February_Feb 2026-03-01 9/450 2026-03-02 13:31 by njzyff
[基金申请] 面上模板改不了页边距吧? +6 ieewxg 2026-02-25 7/350 2026-03-02 12:44 by stidwellNK
[考研] 材料工程274求调剂 +4 Lilithan 2026-03-01 4/200 2026-03-02 12:06 by yuchj
[考研] 哈工大计算机刘劼团队招生 +4 hit_aiot 2026-03-01 6/300 2026-03-02 11:53 by 一声问好
[基金申请] 此成果不能导入原因:元数据必填信息不完整,可 进行补充。 +4 Kittylucky 2026-03-02 5/250 2026-03-02 11:07 by jurkat.1640
[考研] 一志愿郑大材料学硕298分,求调剂 +6 wsl111 2026-03-01 6/300 2026-03-02 11:00 by ydudjddnd
[考研] 299求调剂 +3 Y墨明棋妙Y 2026-02-28 5/250 2026-03-01 21:01 by tangxiaotian
[考研] 291分工科求调剂 +9 science饿饿 2026-03-01 10/500 2026-03-01 18:55 by 18137688336
[考研] 328求调剂 +3 aaadim 2026-03-01 5/250 2026-03-01 17:29 by njzyff
[考研] 307求调剂 +5 wyyyqx 2026-03-01 5/250 2026-03-01 15:21 by Fff-1
[考研] 304求调剂 +6 曼殊2266 2026-02-28 7/350 2026-03-01 15:14 by wjLi2017
[考研] 298求调剂 +9 人间唯你是清欢 2026-02-28 12/600 2026-03-01 14:23 by Ducount.Y
[考研] 317一志愿华南理工电气工程求调剂 +6 Soliloquy_Q 2026-02-28 11/550 2026-03-01 11:14 by 歌liekkas
[硕博家园] 【博士招生】太原理工大学2026化工博士 +4 N1ce_try 2026-02-24 8/400 2026-02-26 08:40 by N1ce_try
信息提示
请填处理意见