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- 2千字游泳論文寫感想
2015-08-04 15:11:28
452
1
- 4000合成化學(xué)感想論文
2018-12-05 18:20:55
380
0
- 寫雷達的論文怎么寫?
2007-01-15 08:35:00
507
1
- 怎么寫環(huán)保論文？
- 急用?。?！拜托了... 急用！?。“萃辛? 展開
2006-10-03 04:38:12
416
3
- 誰能幫我寫一篇學(xué)習(xí)生物的體會感想
- 非常感謝 我會加分的
2013-09-09 08:41:59
414
1
- 關(guān)于刑事技術(shù)手指紋的論文。4千字以上（急用）
2016-02-18 03:55:09
266
1
- 論文英譯漢！！高分！！速度！?。?）
- In the DAISY-MAT system， the sample preparation system is directly connected to the analysis chambers to avoid sample contamination due to sample handling in air.Photoelectron spectroscopy studies have been performed using a Physical Electr... In the DAISY-MAT system， the sample preparation system is directly connected to the analysis chambers to avoid sample contamination due to sample handling in air.Photoelectron spectroscopy studies have been performed using a Physical Electronics PHI 5700 multitechnique surface analysis system with a monochromatized Al anode X-ray source (X-ray photoelectron spectroscopy (XPS)，hm=1486.6eV) and an He discharge lamp (UPS， 21.2eV).The core level lines are analysed with respect to binding energies and different chemical components after a curve fitting procedure using Voigt line profiles. Binding energies are given with respect to the Fermi level， calibrated with sputter cleaned Ag samples prior to every experiment. The binding energies of the core levels of CdTe and ZnTe with respect to the valence band maximum have been determined using the statistical average from large number of polycrystalline samples. The values for CdTe have been published elsewhere [9]. 3.1. CdTe/ZnTe interface XPS core level and UPS valence band spectra for different ZnTe deposition times and therefore ZnTe coverage are show in Fig. 1. As expected with increasing ZnTe coverage， the Cd3d5/2 emissions disappear while the Zn2p3/2 adsorbate emissions appear. After a deposition time of 1092 s， no Cd emissions remain in the spectra. The valence band spectra show a continuous change from pure CdTe valence band to pure ZnTe. No evidence for interfacial reaction is observed in the core and valence spectra. The binding energies of the core levels with respect to the binding energies of the valence band maximum for CdTe and ZnTe are BEVBM(Cd3d5/2)=404.39F0.05 eV and BEVBM (Zn2p3/2)=1021.11F0.05 eV， respectively. Therefore， the valence band position with respect to the Fermi level can be calculated. The determined position of the valence band maximum using the Cd3d5/2 and Zn2p3/2 emissions and the valence band offset are shown in Fig. 2. The offset values scatter only slightly with thickness， indicating a reliable determination. The valence band offset for the CdTe/ZnTe interface is determined as 0.1F0.1 eV， with the valence band maximum of ZnTe above that of CdTe. This result agrees to a previous investigation of CdTe/ZnTe interface prepared by physical vapour deposition [10]， indicating no change of the interfacial barrier height induced by the sputter deposition process. Using bulk band gaps of 1.49 eV for CdTe and 2.3 eV for ZnTe， the valence band offset corresponds to a conduction band offset of 0.91F0.1 eV. 展開
2018-12-11 07:30:14
493
0
- sci醫(yī)生寫論文是什么意思
2017-12-29 05:28:54
355
1
- 經(jīng)濟學(xué)論文案例分析怎么寫？
2016-12-23 16:10:54
346
2
- 我要寫以太網(wǎng)方面論文應(yīng)寫哪些寫內(nèi)容？
2010-12-26 07:46:49
420
1
- 千字論文翻譯，英譯中，懸賞100財富值，優(yōu)質(zhì)答案追加100財富值
- 論文下載鏈接 http://pan.baidu.com/s/1ntNTtJb 譯完后聯(lián)系本人
2018-11-28 13:04:33
441
0
- 千字論文翻譯，英譯中，懸賞100財富值，優(yōu)質(zhì)答案追加100財富值
- 論文下載鏈接 http://pan.baidu.com/s/1o64Uzs2 譯完后聯(lián)系本人
2014-03-13 15:02:13
537
1
- 坐高電位感想
- 坐高電位感想
2017-11-25 19:56:31
563
1
- 誰來幫我寫一篇高中教育論文！
2008-02-13 17:35:29
405
1
- 怎么寫食品營養(yǎng)與安全論文
2017-03-22 06:01:47
308
2
- 化工合成論文選題理由怎么寫
2015-11-04 00:12:58
508
1
- 自由游泳需要有游泳吸管嗎？
- 這是一個叔叔說要吸管，我也不知道要不要，看別人也沒怎么用吸管。... 這是一個叔叔說要吸管，我也不知道要不要，看別人也沒怎么用吸管。 展開
2018-07-25 18:12:41
354
1
- 數(shù)控機床維修技術(shù)的摘要是什么，？寫論文······
- 數(shù)控機床維修技術(shù)的摘要是什么，？我在寫論文，哪位仁兄指點一二～～～～～??！謝謝了
2009-01-02 11:55:24
572
2
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