Quantifying Photon Recycling in Solar Cells and Light-Emitting Diodes: Absorption and Emission Are Always Key.

Bowman, Alan R; Anaya, Miguel; Greenham, Neil C; Stranks, Samuel D

Quantifying Photon Recycling in Solar Cells and Light-Emitting Diodes: Absorption and Emission Are Always Key.

cam.depositDate	2020-07-01
cam.issuedOnline	2020-08-05
cam.orpheus.counter	6
datacite.issourceof.doi	10.17863/CAM.54726
datacite.issupplementedby.url	https://doi.org/10.17863/CAM.54726
dc.contributor.author	Bowman, Alan R
dc.contributor.author	Anaya, Miguel
dc.contributor.author	Greenham, Neil C
dc.contributor.author	Stranks, Samuel D
dc.contributor.orcid	Bowman, Alan [0000-0002-1726-3064]
dc.contributor.orcid	Greenham, Neil [0000-0002-2155-2432]
dc.contributor.orcid	Stranks, Samuel [0000-0002-8303-7292]
dc.date.accessioned	2020-07-01T23:30:33Z
dc.date.available	2020-07-01T23:30:33Z
dc.date.issued	2020-08-07
dc.description.abstract	Photon recycling has received increased attention in recent years following its observation in halide perovskites. It has been shown to lower the effective bimolecular recombination rate and thus increase excitation densities within a material. Here we introduce a general framework to quantify photon recycling which can be applied to any material. We apply our model to idealized solar cells and light-emitting diodes based on halide perovskites. By varying controllable parameters which affect photon recycling, namely, thickness, charge trapping rate, nonideal transmission at interfaces, and absorptance, we quantify the effect of each on photon recycling. In both device types, we demonstrate that maximizing absorption and emission processes remains paramount for optimizing devices, even if this is at the expense of photon recycling. Our results provide new insight into quantifying photon recycling in optoelectronic devices and demonstrate that photon recycling cannot always be seen as a beneficial process.
dc.description.sponsorship	ARB acknowledges funding from a Winton Studentship, Oppenheimer Studentship and the Engineering and Physical Sciences Research Council (EPSRC) Doctoral Training Centre in Photovoltaics (CDT-PV). MA acknowledges funding from the Marie Skłodowska-Curie actions (grant agreement No. 841386) under the European Union’s Horizon 2020 research and innovation programme. SDS acknowledges the Royal Society and Tata Group (UF150033). We thank Luis Pazos-Outón for supplying data for MAPbI3 solar cells. This work was supported by EPSRC grant EP/S030638/1.
dc.format.medium	Print
dc.identifier.doi	10.17863/CAM.54573
dc.identifier.eissn	1079-7114
dc.identifier.issn	0031-9007
dc.identifier.uri	https://www.repository.cam.ac.uk/handle/1810/307479
dc.language	eng
dc.language.iso	eng
dc.publisher	American Physical Society (APS)
dc.publisher.url	http://dx.doi.org/10.1103/physrevlett.125.067401
dc.rights	All rights reserved
dc.subject	40 Engineering
dc.subject	4016 Materials Engineering
dc.title	Quantifying Photon Recycling in Solar Cells and Light-Emitting Diodes: Absorption and Emission Are Always Key.
dc.type	Article
dcterms.dateAccepted	2020-06-24
prism.issueIdentifier	6
prism.publicationDate	2020
prism.publicationName	Phys Rev Lett
prism.startingPage	067401
prism.volume	125
pubs.funder-project-id	Royal Society (UF150033)
pubs.funder-project-id	Engineering and Physical Sciences Research Council (EP/R023980/1)
pubs.funder-project-id	European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (841386)
pubs.funder-project-id	European Research Council (756962)
pubs.funder-project-id	Engineering and Physical Sciences Research Council (EP/S030638/1)
rioxxterms.licenseref.startdate	2020-08
rioxxterms.licenseref.uri	http://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.type	Journal Article/Review
rioxxterms.version	AM
rioxxterms.versionofrecord	10.1103/PhysRevLett.125.067401