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Indium phosphide based solar cell using ultra-thin ZnO as an electron selective layer

Raj, Vidur; Santos, Tamara; Rougieux, Fiacre; Vora, Kaushal; Lysevych, Mykhaylo; Fu, Lan; Mokkapati, Sudha; Tan, Hark Hoe; Jagadish, Chennupati

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According to the Shockley–Queisser limit, the maximum achievable efficiency for a single junction solar cell is ~33.2% which corresponds to a bandgap (E g) of 1.35 eV (InP). However, the maximum reported efficiency for InP solar cells remain at 24.2%  ±  0.5%, that is  >25% below the standard Shockley–Queisser limit. Through a wide range of simulations, we propose a new device structure, ITO/ ZnO/i-InP/p+ InP (p-i-ZnO-ITO) which might be able to fill this efficiency gap. Our simulation shows...[Show more]

dc.contributor.authorRaj, Vidur
dc.contributor.authorSantos, Tamara
dc.contributor.authorRougieux, Fiacre
dc.contributor.authorVora, Kaushal
dc.contributor.authorLysevych, Mykhaylo
dc.contributor.authorFu, Lan
dc.contributor.authorMokkapati, Sudha
dc.contributor.authorTan, Hark Hoe
dc.contributor.authorJagadish, Chennupati
dc.date.accessioned2019-07-29T23:48:38Z
dc.identifier.issn0022-3727
dc.identifier.urihttp://hdl.handle.net/1885/164782
dc.description.abstractAccording to the Shockley–Queisser limit, the maximum achievable efficiency for a single junction solar cell is ~33.2% which corresponds to a bandgap (E g) of 1.35 eV (InP). However, the maximum reported efficiency for InP solar cells remain at 24.2%  ±  0.5%, that is  >25% below the standard Shockley–Queisser limit. Through a wide range of simulations, we propose a new device structure, ITO/ ZnO/i-InP/p+ InP (p-i-ZnO-ITO) which might be able to fill this efficiency gap. Our simulation shows that the use of a thin ZnO layer improves passivation of the underlying i-InP layer and provides electron selectivity leading to significantly higher efficiency when compared to their n+/i/p+ homojunction counterpart. As a proof-of-concept, we fabricated ITO/ZnO/i-InP solar cell on a p+ InP substrate and achieved an open-circuit voltage (V oc) and efficiency as high as 819 mV and 18.12%, respectively, along with ~90% internal quantum efficiency. The entire device fabrication process consists of four simple steps which are highly controllable and reproducible. This work lays the foundation for a new generation of thin film InP solar cells based solely on carrier selective heterojunctions without the requirement of extrinsic doping and can be particularly useful when p- and n-doping are challenging as in the case of III–V nanostructures.
dc.description.sponsorshipThis research is supported by the Australian Research Council.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherInstitute of Physics Publishing
dc.rights© 2018 IOP Publishing Ltd
dc.sourceJournal of Physics D: Applied Physics
dc.titleIndium phosphide based solar cell using ultra-thin ZnO as an electron selective layer
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume51
dc.date.issued2018
local.identifier.absfor020400 - CONDENSED MATTER PHYSICS
local.identifier.ariespublicationu4485658xPUB220
local.publisher.urlhttp://www.iop.org/
local.type.statusAccepted Version
local.contributor.affiliationRaj, Vidur, College of Science, ANU
local.contributor.affiliationSantos, Tamara, College of Science, ANU
local.contributor.affiliationRougieux, Fiacre, College of Engineering and Computer Science, ANU
local.contributor.affiliationVora, Kaushal, College of Science, ANU
local.contributor.affiliationLysevych, Mykhaylo, College of Science, ANU
local.contributor.affiliationFu, Lan, College of Science, ANU
local.contributor.affiliationMokkapati, Sudha, Cardiff University
local.contributor.affiliationTan, Hoe Hark, College of Science, ANU
local.contributor.affiliationJagadish, Chennupati, College of Science, ANU
local.bibliographicCitation.issue39
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage9
local.identifier.doi10.1088/1361-6463/aad7e3
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-03-31T07:23:14Z
local.identifier.scopusID2-s2.0-85053105008
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/0022-3727/..."Post-print on institutional website, institutional repository, subject-based repository, PubMed Central, non-commercial scientific social network or third party eprint servers after 12 months embargo" from SHERPA/RoMEO site (as at 19/08/19).
CollectionsANU Research Publications

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