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			<titleStmt><title level='a'>Development of Low-TDD GaAsyP1-y/GaP/Si Metamorphic Materials for High-Efficiency III-V/Si Photovoltaics</title></titleStmt>
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				<date>06/14/2020</date>
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					<idno type="par_id">10327689</idno>
					<idno type="doi">10.1109/PVSC45281.2020.9300803</idno>
					<title level='j'>47th IEEE Photovoltaic Specialists Conference</title>
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					<author>Jacob T. Boyer</author><author>Ari N. Blumer</author><author>Zak H. Blumer</author><author>Francisco A. Rodriguez</author><author>Daniel L. Lepkowski</author><author>Steven A. Ringel</author><author>Tyler J. Grassman</author>
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			<abstract><ab><![CDATA[A bstr a ct -M et a m or p hi c III-V/ Si m at eri als wit h l o w t hr e a di n g disl o c ati o n d e nsit y ( T D D) ar e criti c al t o r e alizi n g hi g h-effi ci e n c y III-V/ Si m ultij u n cti o n p h ot o v olt ai cs. I n p urs uit of a d u al j u n cti o n III-V/ Si d esi g n wit h a G a As 0. 7 5 P 0. 2 5 t o p j u n cti o n e pit a xi all y i nt e gr at e d o n a Si b ott o m j u n cti o n, w e r e p ort o n pr o gr ess m a d e i n t h e d e v el o p m e nt of G a P/ Si a n d G a As y P 1-y / Si m at eri als wit h si g nifi c a ntl y r e d u c e d T D D. Usi n g a ti g htl y i nt e gr at e d st u d y of f u n d a m e nt al disl o c ati o n d y n a mi cs, r a pi d el e ctr o n mi cr os c o p y b as e d f e e d b a c k o n disl o c ati o n p o p ul ati o ns, a n d M O C V D pr o c ess d e v e l o p m e nt, w e h a v e f ull y r ee n gi n e er e d t h e G a P o n Si gr o wt h pr o c ess. O ur n e w a p pr o a c h r es ults i n a T D D of 7 × 1 0 4 c m -2 f or 5 0 n m t hi c k fil ms. I m pl e m e nt ati o n of a n o v el disl o c ati o n gli d e e n h a n ci n g h et er ostr u ct ur e t h e n e n a bl e d s u bs e q u e nt gr o wt h of f ull y-r el a x e d, 5 0 0 n m t ot al t hi c k n ess n-G a P wit h a T D D of 2. 4 × 1 0 6 c m -2 . W h e n a p pli e d t o t h e pr o d u cti o n of f ull G a As 0. 7 5 P 0. 2 5 / Si t a n d e m s ol ar c ell str u ct ur es, b ut wit h o ut a n y si g nifi c a nt o pti miz ati o n t h us f ar, t his l o w T D D is eff e cti v el y m ai nt ai n e d, yi el di n g a t e r mi n al T D D of o nl y 3. 0 × 1 0 6 c m -2 , s uffi ci e nt t o s u p p ort hi g h p h ot o v olt ai c p erf or m a n c e.]]></ab></abstract>
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<div xmlns="http://www.tei-c.org/ns/1.0"> <ab><ref type="table">E 0 0 0 7 5 3 9) a n d t h e N ati o n al S ci e n c e F o u n d ati o n ( 1 7 0 8 9 5 7)</ref> </ab><ab><ref type="table">X 1 6 A M 5 0 H).  9 7 8-1-7 2 8 1-6 1 1 5-0/ 2 0/ $ 3 1. 0 0 &#169; 2 0 2 0</ref> </ab></div>
<div xmlns="http://www.tei-c.org/ns/1.0"><head>c d et ails t h e T D D m e as ur e d vi a E C CI as a f u n cti o n of gr o wt h t hi c k n ess f or t h es e s a m pl es. F or t h e l e g a c y pr o c ess, t h e m aj orit y of t h e disl o c ati o ns a p p e ar t o n u cl e at e all at 5 0 n m, j ust at t h e o ns et of criti c al t hi c k n ess, p ossi bl y s u g g esti n g a r e d u c e d e n er g y b arri er t o n u cl e ati o n or a n i n cr e as e d b arri er t o gli d e. I nt er esti n gl y, i n t h e i m pr o v e d A L E c as e n u cl e ati o n o c c urs m or e gr a d u all y, b ut e v e nt u all y c at c h es u p t o t h e T D D of t h e l e g a c y pr o c ess at ar o u n d 5 0 0 n m t ot al t hi c k n ess. W hil e it a p p e ars t h at e x c ess disl o c ati o n n u cl e ati o n is eli mi n at e d at t h e o n s et of criti c al t hi c k n ess f or t h e n e w pr o c ess, t h e c o nti n u al n u cl e ati o n t hr o u g h o ut t h e gr o wt h s u g g ests t h at gli d e ( w hi</head><ab><ref type="table">9 7 8-1-7 2 8 1-6 1 1 5-0/ 2</ref> </ab></div></body>
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