24小时热门版块排行榜    

北京石油化工学院2026年研究生招生接收调剂公告
查看: 1059  |  回复: 10
当前主题已经存档。
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

maike01

金虫 (正式写手)

[交流] 【讨论】关于ZnO发光

半导体材料的一般都很熟悉氧化锌的发光,带边,紫外光,空位绿光。但是对于紫外应该是低于390吧。具体的这个范围是怎么确定的啊?我看到一片文章居然说401的紫外发光,觉得这个界限好象不清楚啊,请大家都来谈谈看法,或者交流哈读文献的经验哈。看到过哪些ZnO发光比较奇怪的行为以及解释哈。

Fig. 5 shows the room-temperature PL spectrum of the ZnO whiskers. Three
emission bands, including a strong ultraviolet emission at B401 nm, a strong blue emission at B443 nm, as well as a weak blue–green emission at B484 nm, were observed. The UV and green emission have been studied for many years and the mechanisms for them have been clearly known.
The UV emission is attributed to the near band edge emission of the wide band gapof ZnO due to the annihilation of excitons [27]. And the green
emission corresponds to the singly ionized oxygen vacancy in ZnO and results from the recombination of photogenerated hole with the single ionized charge state of this defect [28]. However, the mechanism is not yet clear for the blue emission although the blue band emission has been reported in the ZnO films and ZnO nanorods [6,29]. The weak blue–green emission implies that there are few surface defects in the ZnO whiskers, which is in agreement with the result obtained from the HRTEM observation.

[ Last edited by dgf2008 on 2009-4-16 at 23:53 ]
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

dgf2008

主管区长 (知名作家)

不要鄙视看帖不回的人!!

优秀区长

,无法显示
百人计划,千人计划,万人计划,百千万人才计划
5楼2009-04-17 00:35:02
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 11 个回答

maike01

金虫 (正式写手)

版主,怎么搞的,我传上去都打不开,还要付费。
2楼2009-04-16 22:40:59
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

dgf2008

主管区长 (知名作家)

不要鄙视看帖不回的人!!

优秀区长

帮你传一下



[ Last edited by dgf2008 on 2009-4-17 at 00:26 ]
百人计划,千人计划,万人计划,百千万人才计划
4楼2009-04-17 00:23:26
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

nanohappyyou

金虫 (正式写手)

6楼2009-04-17 15:20:24
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 293求调剂 +5 末未mm 2026-04-02 6/300 2026-04-03 15:20 by 王保杰33
[考研] 调剂0855-288 +3 x熊二a 2026-04-03 3/150 2026-04-03 15:07 by zhshch
[考研] 复试调剂 +5 春日来信- 2026-04-03 5/250 2026-04-03 15:01 by buqi613
[考研] 085600专硕材料与化工348分求调剂 +10 上学啦! 2026-04-01 11/550 2026-04-03 14:13 by 百灵童888
[硕博家园] 求老师收留 +9 lllq123 2026-04-03 9/450 2026-04-03 13:48 by 呼吸都是减肥
[考研] 调剂 +5 JLLLLLLLLLL 2026-04-03 5/250 2026-04-03 12:17 by 瑜玉同归
[考研] 316求调剂 +14 舟自梗 2026-04-01 18/900 2026-04-03 10:28 by linyelide
[考研] 273求调剂 +20 李芷新1 2026-03-31 20/1000 2026-04-03 09:58 by linyelide
[考研] 材料考研调剂 +10 Gs大王 2026-04-02 10/500 2026-04-03 09:47 by 遗忘消失的灆
[考研] 260求调剂 +3 朱芷琳 2026-04-02 3/150 2026-04-03 08:44 by yulian1987
[考研] 348求调剂 +11 zzzzyk123 2026-04-01 11/550 2026-04-02 16:52 by Wang200018
[考研] 081200-11408-276学硕求调剂 +3 崔wj 2026-04-02 3/150 2026-04-02 15:06 by cal0306
[考研] 290求调剂085701 +3 1314捧花 2026-04-02 3/150 2026-04-02 13:34 by Ecowxq666!
[考研] 070300化学279求调剂 +15 哈哈哈^_^ 2026-03-31 17/850 2026-04-01 21:37 by 给你你注意休息
[硕博家园] 考研调剂 +5 骆驼男人 2026-04-01 5/250 2026-04-01 14:28 by syjjj0321
[考研] 267求调剂 +13 uiybh 2026-03-31 13/650 2026-04-01 10:25 by 探123
[考研] 080200学硕,机械工程专业277分,求带走! +4 瓶子PZ 2026-03-31 4/200 2026-03-31 20:16 by vgtyfty
[考博] 材料专业申博 +5 杜雨婷dyt 2026-03-29 5/250 2026-03-31 11:19 by oooqiao
[考研] 085600,专业课化工原理,320分求调剂 +6 大馋小子 2026-03-29 6/300 2026-03-31 10:03 by 氯化亚硝酰
[考研] 一志愿南京航空航天大学材料学硕求调剂 +3 @taotao 2026-03-28 3/150 2026-03-28 10:26 by JourneyLucky
信息提示
请填处理意见