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000889170 037__ $$aFZJ-2021-00093
000889170 1001_ $$0P:(DE-Juel1)130285$$aRau, Uwe$$b0$$eCorresponding author$$ufzj
000889170 1112_ $$a2020 MRS Virtual Spring/Fall Meeting & Exhibit$$cvirtual$$d2020-11-27 - 2020-12-04$$wUSA
000889170 245__ $$aPhotovoltaic performance of metal-halide perovskites – what is general and what is special?
000889170 260__ $$c2020
000889170 3367_ $$033$$2EndNote$$aConference Paper
000889170 3367_ $$2DataCite$$aOther
000889170 3367_ $$2BibTeX$$aINPROCEEDINGS
000889170 3367_ $$2DRIVER$$aconferenceObject
000889170 3367_ $$2ORCID$$aLECTURE_SPEECH
000889170 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1610213814_28620$$xInvited
000889170 520__ $$aAfter many decades of photovoltaic research we would expect that there should be a common scientific understanding on the necessary ingredients to make almost perfect solar cells. However, the unprecedented success of metal-halide perovskites (MHPs) stimulated discussions on whether there could be a certain, yet non-established secret that distinguishes this material from others. The present contribution compares the performance of MHPs to other photovoltaic materials in terms of a general top-down approach. This direct comparison allows one to judge the strengths and weaknesses of different technologies but also gives some insight on the specific achievements, e.g. that, on the one hand, the radiative yield of MHPs is second only to the best GaAs solar cells, which implies open circuit voltages that come close to the thermodynamic limits. On the other hand the relative contribution of fill factor losses to the overall efficiency losses in MHPs is relatively large compared to most other technologies. Fill factor issues can generally originate from recombination or voltage losses during charge carrier collection, both aspects playing a role for MHPs. This issue will be discussed in terms of new, general models for the charge carrier separation in solar cells. Finally, the question will be addressed whether specific bulk properties of MHPs, like the presence of an indirect band gap, the density of states, or small phonon energies could be of importance for their favorable photovoltaic behavior.
000889170 536__ $$0G:(DE-HGF)POF3-121$$a121 - Solar cells of the next generation (POF3-121)$$cPOF3-121$$fPOF III$$x0
000889170 909CO $$ooai:juser.fz-juelich.de:889170$$pVDB
000889170 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130285$$aForschungszentrum Jülich$$b0$$kFZJ
000889170 9131_ $$0G:(DE-HGF)POF3-121$$1G:(DE-HGF)POF3-120$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lErneuerbare Energien$$vSolar cells of the next generation$$x0
000889170 9141_ $$y2020
000889170 920__ $$lyes
000889170 9201_ $$0I:(DE-Juel1)IEK-5-20101013$$kIEK-5$$lPhotovoltaik$$x0
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000889170 980__ $$aVDB
000889170 980__ $$aI:(DE-Juel1)IEK-5-20101013
000889170 980__ $$aUNRESTRICTED
000889170 981__ $$aI:(DE-Juel1)IMD-3-20101013