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分享EES上關(guān)于surface passivation layer改善光電分解水的綜述 已有2人參與
簡要地?cái)⑹鲆幌拢?br />
由于能源的長期可持續(xù)發(fā)展即將成為人類社會(huì)發(fā)展的制約,太陽能電池可能無法完全解決這個(gè)問題,畢竟能量儲(chǔ)存問題必須同時(shí)解決。而光電分解水可以產(chǎn)生氫氣、或者同時(shí)還原二氧化碳,產(chǎn)生可以儲(chǔ)存的燃料,如果能夠解決效率的問題,將成為非常有益的補(bǔ)充。光電分解水發(fā)展在渡過了一段興盛、沉寂之后,目前重新變得非常引人注目。然而,半導(dǎo)體的問題在于能夠產(chǎn)生光電壓和光電流,但是表面的催化反應(yīng)卻未必同時(shí)有效。
本文在半導(dǎo)體-催化劑的異質(zhì)結(jié)構(gòu)上進(jìn)行了綜述,重點(diǎn)討論了1)半導(dǎo)體與催化劑的相互作用,2)半導(dǎo)體-表面腐蝕與鈍化,3)鈍化層-催化劑層的構(gòu)建以及表面態(tài)的控制等方面的一些進(jìn)展。
引文:102篇
題目:Enhanced photoelectrochemical water-splitting performance of semiconductors by surface passivation layers
作者:Rui Liu,a Zhi Zheng,bc Joshua Spurgeona and Xiaogang Yang*bc
雜志:Energy Environ. Sci., 2014, Advance Article
DOI: 10.1039/C4EE00450G
摘要:An important approach for solving the world's sustainable energy challenges is the conversion of solar energy to chemical fuels. Semiconductors can be used to convert/store solar energy to chemical bonds in an energy-dense fuel. Photoelectrochemical (PEC) water-splitting cells, with semiconductor electrodes, use sunlight and water to generate hydrogen. Herein, recent studies on improving the efficiency of semiconductor-based solar water-splitting devices by the introduction of surface passivation layers are reviewed. We show that passivation layers have been used as an effective strategy to improve the charge-separation and transfer processes across semiconductor–liquid interfaces, and thereby increase overall solar energy conversion efficiencies. We also summarize the demonstrated passivation effects brought by these thin layers, which include reducing charge recombination at surface states, increasing the reaction kinetics, and protecting the semiconductor from chemical corrosion. These benefits of passivation layers play a crucial role in achieving highly efficient water-splitting devices in the near future.
http://pubs.rsc.org/en/content/a ... 00450g#!divAbstract![分享EES上關(guān)于surface passivation layer改善光電分解水的綜述]()
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2014-06-16 21:43:16, 1.53 M
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