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dc.contributor.authorWang, Hsin-Ping
dc.contributor.authorDharmaraj, Periyanagounder
dc.contributor.authorLi, An-Cheng
dc.contributor.authorHe, Jr-Hau
dc.date.accessioned2018-12-11T13:16:27Z
dc.date.available2018-12-11T13:16:27Z
dc.date.issued2018-12-07
dc.identifier.citationWang H-P, Dharmaraj P, Li A-C, He J-H (2018) Fabrication of Silicon Hierarchical Structures for Solar Cell Applications. IEEE Access: 1–1. Available: http://dx.doi.org/10.1109/access.2018.2885169.
dc.identifier.issn2169-3536
dc.identifier.doi10.1109/access.2018.2885169
dc.identifier.urihttp://hdl.handle.net/10754/630268
dc.description.abstractHierarchical silicon structures consisting of micropyramids and nanowire arrays are fabricated by two-step chemical etching processes aimed at achieving cost and time effectiveness constraints without using any expensive vacuum system or complicated lithography process. The hierarchical structures can suppress the average reflectance to as low as 4.3% from 300 to 1100 nm without causing poor minority carrier lifetimes, exhibiting excellent broadband light-harvesting abilities with minimal recombination losses, which is the key point to design high performance nanostructured solar cells. By utilizing hierarchical structures in practical solar cells application, the short-circuit current density (JSC) shows a significant enhancement from 21.5 to 28.7 mA/cm2, and the conversion efficiency is enhanced by a factor of 35%. Such a significant enhancement is attributed not only to the superior light harvesting achieved by hierarchical structures but also to the benefit of small electrical losses in the solar cells. Thus, the concept and technique presented in this study open avenues for developing high-performance structure solar devices.
dc.description.sponsorshipThis work was financially supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR-2016-CRG5-3005), KAUST Sensor Initiative, KAUST Solar Center, and KAUST baseline funding.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/8565843
dc.rights(c) 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectHierarchical structures
dc.subjectMicropyramids
dc.subjectLight-harvesting
dc.subjectPower conversion efficiency
dc.subjectSurface recombination
dc.titleFabrication of Silicon Hierarchical Structures for Solar Cell Applications
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentNano Energy Lab
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalIEEE Access
dc.eprint.versionPost-print
kaust.personWang, Hsin-Ping
kaust.personDharmaraj, Periyanagounder
kaust.personLi, An-Cheng
kaust.personHe, Jr-Hau
kaust.grant.numberOSR-2016-CRG5-3005
refterms.dateFOA2018-12-11T13:22:31Z
dc.date.published-online2018-12-07
dc.date.published-print2019


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