 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 3 | 1/1 | 返回列表 |
| 查看: 788 | 回復(fù): 2 | ||||||||
| 本帖產(chǎn)生 1 個(gè) 基金HEPI ，點(diǎn)擊這里進(jìn)行查看 | ||||||||
chlfu木蟲(chóng) (正式寫(xiě)手)
|
[求助]
求50702036摘要
|
|||||||
|
回復(fù)此樓» 猜你喜歡
求調(diào)劑，一志愿 南京航空航天大學(xué) ，080500材料科學(xué)與工程學(xué)碩，總分289分
已經(jīng)有9人回復(fù)
-
材料科學(xué)與工程求調(diào)劑
已經(jīng)有8人回復(fù)
-
一志愿大連理工大學(xué)材料求調(diào)劑
已經(jīng)有3人回復(fù)
-
一志愿北化085600材料專(zhuān)碩275|有文章專(zhuān)利｜求調(diào)劑
已經(jīng)有9人回復(fù)
-
材料求調(diào)劑 一志愿哈工大總分298分，前三科223分
已經(jīng)有8人回復(fù)
-
274求調(diào)劑
已經(jīng)有3人回復(fù)
-
合肥區(qū)域性重點(diǎn)一本招收調(diào)劑
已經(jīng)有4人回復(fù)
-
085600材料與化工調(diào)劑
已經(jīng)有10人回復(fù)
-
22408 359分調(diào)劑
已經(jīng)有7人回復(fù)
-
抱歉
已經(jīng)有4人回復(fù)
zuozhijun5134
至尊木蟲(chóng) (文壇精英)
- 應(yīng)助: 314 (大學(xué)生)
- 金幣: 15816
- 散金: 2369
- 紅花: 14
- 帖子: 10682
- 在線(xiàn): 303.6小時(shí)
- 蟲(chóng)號(hào): 381687
- 注冊(cè): 2007-05-24
- 性別: GG
- 專(zhuān)業(yè): 能源化工
2樓2013-01-24 09:32:03
wxiaoqiang
木蟲(chóng) (著名寫(xiě)手)
- 基金HEPI: 15
- 應(yīng)助: 4 (幼兒園)
- 金幣: 3290.5
- 紅花: 1
- 帖子: 1473
- 在線(xiàn): 231.8小時(shí)
- 蟲(chóng)號(hào): 662452
- 注冊(cè): 2008-11-26
- 專(zhuān)業(yè): 化工熱力學(xué)和基礎(chǔ)數(shù)據(jù)
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
chlfu: 金幣+60, 基金HEPI+1, ★★★很有幫助 2013-07-28 09:24:46
chlfu: 金幣+60, 基金HEPI+1, ★★★很有幫助 2013-07-28 09:24:46
|
中文摘要： 在本項(xiàng)目的資助下，我們通過(guò)研究BNT、PZT和BFO等鐵電薄膜的光電流，著重研究剩余極化、空間電荷、界面結(jié)構(gòu)和肖特基勢(shì)壘對(duì)鐵電薄膜光電流的影響。通過(guò)不同厚度PZT薄膜光電流的研究，將剩余極化和界面肖特基接觸對(duì)光電流的貢獻(xiàn)區(qū)分開(kāi)來(lái)，指出了肖特基接觸在鐵電薄膜光電流中的重要地位；通過(guò)對(duì)比研究BNT和PZT鐵電薄膜的光電流，指出了薄膜表面形貌對(duì)肖特基勢(shì)壘的重要影響；通過(guò)控制PZT薄膜上界面層的厚度，澄清了肖特基接觸產(chǎn)生的光電流不僅僅取決于肖特基勢(shì)壘的大小，還反比于該勢(shì)壘所在的界面層厚度；通過(guò)不同退火溫度、氣氛控制鐵電薄膜內(nèi)空間電荷密度，發(fā)現(xiàn)高溫或氧氣氛下退火的樣品具有較大的剩余極化和下界面肖特基勢(shì)壘，從而產(chǎn)生較大的光電流，空間電荷對(duì)光電流的影響機(jī)制還需要進(jìn)一步研究；通過(guò)BNT薄膜光電流的研究，闡明了鐵電薄膜剩余極化機(jī)制主要是來(lái)自于極化的排列取向而在薄膜內(nèi)部形成的退極化場(chǎng)，而不是由于極化束縛電荷出現(xiàn)在上、下界面而打破上、下界面肖特基勢(shì)壘的平衡。在上述研究工作的基礎(chǔ)上，提出了鐵電薄膜光電流機(jī)制和模型，致力于提高鐵電薄膜的光電流，為進(jìn)一步研究鐵電薄膜個(gè)光伏效應(yīng)及其應(yīng)用打下良好的基礎(chǔ)。 中文主題詞： 鐵電薄膜，光電流，剩余極化，肖特基勢(shì)壘，界面結(jié)構(gòu) 英文摘要: Under the aiding of the project, we researched the effect of remnant polarization, space charge, interface structure, and Schottky barrier on the photocurrent of ferroelectric materials, such as BNT, PZT, and BFO films. We suggested that the Schottky effect on the photocurrent was dominated in PZT ferroelectric films when the polarization contribution for the photocurrent and the Schottky one were separated. Comparing the photocurrent of BNT and PZT films, we found the film's surface pattern had the important effect on the Schottky barrier. Controlling the top interface thickness by the method of annealing, we found that the photocurrent due to the Schottky barrier is determined not only by the height of barrier but also by the interface layer thickness. We fabricated the ferroelectric films annealed under different temperature and atmosphere in order to control the amount of space charge. As a result, we found that the samples having larger polarization and bottom interface Schottky barrier were the ones which were annealed in higher temperature and O2 atmospheres. The mechanism of the space charge effect on the photocurrent is still ambiguous and need to be researched further. On the base of the photocurrent of BNT films, we cleared that the polarization effect on the photocurrent is not due to the destruction of the symmetry between the top Schottky barrier and the bottom one attribute to the present of polarization bound charge at the top or bottom interface, but the depolarization field in the film attribute to the alignment of the dipoles. Basing the above works, we brought forward the model and mechanism of the ferroelectric film photocurrent and did our endeavor to enhance the photocurrent of the ferroelectric in order that the researcher and application of the ferroelectric photovoltaic had a well beginning. 英文主題詞： Ferroelectric; photocurrent; remanant; Schottky barrier; Interface structure. |
3樓2013-04-23 21:54:19
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 chlfu 的主題更新
| 3 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 一志愿北京化工大學(xué)材料與化工（085600）296求調(diào)劑 +25 | 稻妻小編 2026-03-26 | 25/1250 |
|
|---|---|---|---|---|
|
[考研] 一志愿南昌大學(xué)324求調(diào)劑 +9 | hanamiko 2026-03-27 | 9/450 |
|
|
|
[考研] 309求調(diào)劑 +15 | 誰(shuí)不是少年 2026-03-29 | 15/750 |
|
|
|
[考研] 26考研-291分-廈門(mén)大學(xué)（085601）-柔性電子學(xué)院材料工程專(zhuān)業(yè)求調(diào)劑 +5 | min3 2026-03-24 | 6/300 |
|
|
|
[考研] 化工專(zhuān)碩求調(diào)劑 +5 | question挽風(fēng) 2026-03-24 | 5/250 |
|
|
|
[考研] 286求調(diào)劑 +5 | Faune 2026-03-30 | 5/250 |
|
|
|
[考研] 342求調(diào)劑 +4 | 加油a李zs 2026-03-26 | 4/200 |
|
|
|
[考研] 070300一志愿211，312分求調(diào)劑院校 +4 | 小黃鴨寶 2026-03-30 | 4/200 |
|
|
|
[考研] 【求調(diào)劑】085601材料工程專(zhuān)碩 | 總分272 | +7 | 腳滑的守法公民 2026-03-27 | 7/350 |
|
|
|
[考研] 343求調(diào)劑085601 +3 | 要努力學(xué)習(xí)x 2026-03-29 | 3/150 |
|
|
|
[考研] 289求調(diào)劑 +5 | BrightLL 2026-03-29 | 5/250 |
|
|
|
[考研] 求調(diào)劑 +7 | 爭(zhēng)取九點(diǎn)睡 2026-03-28 | 8/400 |
|
|
|
[考研] 311（085601）求調(diào)劑 +4 | liziyeyeye 2026-03-28 | 4/200 |
|
|
|
[考研] 070300求調(diào)劑306分 +4 | 26要上岸 2026-03-27 | 4/200 |
|
|
|
[考研] 085701環(huán)境工程，267求調(diào)劑 +16 | minht 2026-03-26 | 16/800 |
|
|
|
[考研] 339求調(diào)劑，想調(diào)回江蘇 +6 | 烤麥芽 2026-03-27 | 8/400 |
|
|
|
[考研] 0703化學(xué)求調(diào)劑，各位老師看看我�。�！ +5 | 祁祺祺 2026-03-25 | 5/250 |
|
|
|
[考研] 一志愿鄭大085600，310分求調(diào)劑 +5 | 李瀟可 2026-03-26 | 5/250 |
|
|
|
[考研] 調(diào)劑推薦 +5 | 清酒714 2026-03-26 | 6/300 |
|
|
|
[考研] 321求調(diào)劑 +6 | Ymlll 2026-03-24 | 6/300 |
|