{"id":3117,"date":"2013-03-12T20:47:29","date_gmt":"2013-03-13T00:47:29","guid":{"rendered":"http:\/\/www.catalysisclubphilly.org\/?p=3117"},"modified":"2013-03-27T22:11:55","modified_gmt":"2013-03-28T02:11:55","slug":"designing-and-probing-photovoltaic-and-photocatalytic-materials","status":"publish","type":"post","link":"http:\/\/catalysisclubphilly.org\/awe9a91v\/meetings\/designing-and-probing-photovoltaic-and-photocatalytic-materials\/","title":{"rendered":"Designing and Probing Photovoltaic and Photocatalytic Materials"},"content":{"rendered":"

Meeting Program \u2014 November 2012<\/h3>\n

 
\nJason B. Bax\u00adter<\/strong>
\nDepart\u00adment of Chem\u00adi\u00adcal and Bio\u00adlog\u00adi\u00adcal Engi\u00adneer\u00ading
\nDrex\u00adel Uni\u00adver\u00adsi\u00adty
\nPhiladel\u00adphia, PA<\/em>
\n 
\nAbstract<\/strong> \u2014 The sun\u00adlight inci\u00addent on the earth pro\u00advides 10,000 times more pow\u00ader than is need\u00aded to meet glob\u00adal demand. How\u00adev\u00ader, con\u00advert\u00ading this ener\u00adgy into elec\u00adtric\u00adi\u00adty or fuels effi\u00adcient\u00adly and cost effec\u00adtive\u00adly remains a great chal\u00adlenge. Nanos\u00adtruc\u00adtured solar cells present oppor\u00adtu\u00adni\u00adties to inex\u00adpen\u00adsive\u00adly con\u00advert sun\u00adlight to elec\u00adtric\u00adi\u00adty through the use of archi\u00adtec\u00adtures tai\u00adlored on the nanome\u00adter to microm\u00ade\u00adter length scale. Pla\u00adnar solar cells are sub\u00adject to oppos\u00ading con\u00adstraints where thick films are required for light absorp\u00adtion while thin\u00adner films are desir\u00adable for effi\u00adcient charge sep\u00ada\u00adra\u00adtion. Extreme\u00adly thin absorber (ETA) solar cells can decou\u00adple these con\u00adstraints by using a thin absorber at the inter\u00adface between high\u00adly struc\u00adtured p- and n-type lay\u00aders. In this talk, I will describe our work on ETA solar cells that use a thin CdSe coat\u00ading on a ZnO nanowire array to absorb light and inject elec\u00adtrons into the oxide. Ratio\u00adnal design of these archi\u00adtec\u00adtures requires con\u00adtrol over mor\u00adphol\u00ado\u00adgy and microstruc\u00adture of the mate\u00adri\u00adals, as well as knowl\u00adedge of mate\u00adr\u00adi\u00adal prop\u00ader\u00adties such as pho\u00adtoex\u00adcit\u00aded car\u00adri\u00ader life\u00adtimes and mobil\u00adi\u00adties. Our approach uti\u00adlizes a com\u00adbi\u00adna\u00adtion of solar cell mea\u00adsure\u00adments and ultra\u00adfast tran\u00adsient absorp\u00adtion spec\u00adtroscopy to under\u00adstand the effects of CdSe thick\u00adness, anneal\u00ading con\u00addi\u00adtions, and inter\u00adfa\u00adcial treat\u00adments on the dynam\u00adics and effi\u00adcien\u00adcy of charge car\u00adri\u00ader sep\u00ada\u00adra\u00adtion, and ulti\u00admate\u00adly on the solar-to-elec\u00adtric ener\u00adgy con\u00adver\u00adsion effi\u00adcien\u00adcy. These stud\u00adies pro\u00advide guide\u00adlines for archi\u00adtec\u00adture design and mate\u00adri\u00adals selec\u00adtion for ETA solar cells.
\n 
\n<\/p>

\"Jason<\/a>

Jason B. Bax\u00adter<\/p><\/div>Biog\u00adra\u00adphy<\/strong> \u2014 Dr. Jason B. Bax\u00adter is an Assis\u00adtant Pro\u00adfes\u00adsor in the Depart\u00adment of Chem\u00adi\u00adcal and Bio\u00adlog\u00adi\u00adcal Engi\u00adneer\u00ading at Drex\u00adel Uni\u00adver\u00adsi\u00adty in Philadel\u00adphia, PA, where he began in 2007. He received his B.Ch.E. from the Uni\u00adver\u00adsi\u00adty of Delaware in 2000, where he did under\u00adgrad\u00adu\u00adate research on dye sen\u00adsi\u00adtized solar cells at the Insti\u00adtute of Ener\u00adgy Con\u00adver\u00adsion under the guid\u00adance of Prof. T.W. Fras\u00ader Rus\u00adsell. He earned his Ph.D. in chem\u00adi\u00adcal engi\u00adneer\u00ading from the Uni\u00adver\u00adsi\u00adty of Cal\u00adi\u00adfor\u00adnia San\u00adta Bar\u00adbara in 2005. Advised by Prof. Eray S. Aydil and fund\u00aded by an NSF Grad\u00adu\u00adate Research Fel\u00adlow\u00adship, he inves\u00adti\u00adgat\u00aded growth and char\u00adac\u00adter\u00adi\u00adza\u00adtion of ZnO nanowires and their appli\u00adca\u00adtion in dye sen\u00adsi\u00adtized solar cells. From 2005\u20132007, Dr. Bax\u00adter was an ACS Petro\u00adle\u00adum Research Fund Alter\u00adna\u00adtive Ener\u00adgy Post\u00addoc\u00adtor\u00adal Fel\u00adlow at Yale Uni\u00adver\u00adsi\u00adty. There he worked with Prof. Charles A. Schmut\u00adten\u00admaer in the Chem\u00adistry Depart\u00adment on the appli\u00adca\u00adtion of time-resolved ter\u00ada\u00adhertz spec\u00adtroscopy to probe tran\u00adsient pho\u00adto\u00adcon\u00adduc\u00adtiv\u00adi\u00adty in oxide thin films, nanopar\u00adti\u00adcles, nanowires, and bulk crys\u00adtals. \n

Dr. Baxter\u2019s cur\u00adrent research inter\u00adests are in design\u00ading, fab\u00adri\u00adcat\u00ading, and prob\u00ading semi\u00adcon\u00adduc\u00adtor nano\u00adma\u00adte\u00adri\u00adals and thin films for solar ener\u00adgy con\u00adver\u00adsion. Most cur\u00adrent efforts focus on solar-to-elec\u00adtric ener\u00adgy con\u00adver\u00adsion, but the group has grow\u00ading inter\u00adest in pho\u00adto\u00adcat\u00adalyt\u00adic water split\u00adting for clean and renew\u00adable hydro\u00adgen pro\u00adduc\u00adtion. Var\u00adi\u00adous projects in the group include extreme\u00adly thin absorber solar cells, organ\u00adic solar cells, microre\u00adac\u00adtor depo\u00adsi\u00adtion of grad\u00aded thin films for high-through\u00adput char\u00adac\u00adter\u00adi\u00adza\u00adtion, and ultra\u00adfast pump-probe spec\u00adtroscopy to mea\u00adsure charge car\u00adri\u00ader dynam\u00adics. The gen\u00ader\u00adal focus of the group is on striv\u00ading to under\u00adstand how mate\u00adri\u00adals and inter\u00adfaces affect device per\u00adfor\u00admance, and how these mate\u00adri\u00adals and inter\u00adfaces can be con\u00adtrolled dur\u00ading the fab\u00adri\u00adca\u00adtion process. Low-tem\u00adper\u00ada\u00adture solu\u00adtion pro\u00adcess\u00ading meth\u00adods are used when\u00adev\u00ader pos\u00adsi\u00adble to pro\u00advide a path\u00adway to low-cost, scal\u00adable man\u00adu\u00adfac\u00adtur\u00ading.
\n\tDr. Bax\u00adter advis\u00ades a group of 4 PhD stu\u00addents, 2 MS stu\u00addents, and 8 BS stu\u00addents. He has pub\u00adlished near\u00adly 25 papers, which have col\u00adlec\u00adtive\u00adly gar\u00adnered well over 1000 cita\u00adtions. He has been award\u00aded over $1 mil\u00adlion in fund\u00ading as lead inves\u00adti\u00adga\u00adtor and anoth\u00ader $3 mil\u00adlion as co-inves\u00adti\u00adga\u00adtor. He received the NSF CAREER Award in 2009.<\/p>\n","protected":false},"excerpt":{"rendered":"

Meet\u00ading Pro\u00adgram \u2014 Novem\u00adber 2012   Jason B. Bax\u00adter Depart\u00adment of Chem\u00adi\u00adcal and Bio\u00adlog\u00adi\u00adcal Engi\u00adneer\u00ading Drex\u00adel Uni\u00adver\u00adsi\u00adty Philadel\u00adphia, PA   Abstract \u2014 The sun\u00adlight inci\u00addent on the earth pro\u00advides 10,000 times more pow\u00ader than is need\u00aded to meet glob\u00adal demand. How\u00adev\u00ader, con\u00advert\u00ading this ener\u00adgy into elec\u00adtric\u00adi\u00adty or fuels effi\u00adcient\u00adly and cost effec\u00adtive\u00adly remains a great [\u2026]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[15,13],"tags":[],"class_list":["post-3117","post","type-post","status-publish","format-standard","hentry","category-abstracts","category-meetings"],"_links":{"self":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/3117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/comments?post=3117"}],"version-history":[{"count":7,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/3117\/revisions"}],"predecessor-version":[{"id":3310,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/posts\/3117\/revisions\/3310"}],"wp:attachment":[{"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/media?parent=3117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/categories?post=3117"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/catalysisclubphilly.org\/awe9a91v\/wp-json\/wp\/v2\/tags?post=3117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}