000644511 001__ 644511
000644511 005__ 20260303125926.0
000644511 0247_ $$2doi$$a10.29363/nanoge.perfunpro.2025.038
000644511 037__ $$aPUBDB-2026-00370
000644511 041__ $$aEnglish
000644511 1001_ $$0P:(DE-H253)PIP1014884$$aZaluzhnyy, Ivan$$b0$$eCorresponding author
000644511 1112_ $$aPerovskite Semiconductors: From Fundamental Properties to Devices$$cKonstanz$$d2025-09-08 - 2025-09-10$$wGermany
000644511 245__ $$aDynamics and kinetics of light-induced phase segregation in mixed lead-halide perovskites
000644511 260__ $$c2025
000644511 3367_ $$033$$2EndNote$$aConference Paper
000644511 3367_ $$2DataCite$$aOther
000644511 3367_ $$2BibTeX$$aINPROCEEDINGS
000644511 3367_ $$2DRIVER$$aconferenceObject
000644511 3367_ $$2ORCID$$aLECTURE_SPEECH
000644511 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1770727699_3476913
000644511 500__ $$akein PDF download angeboten, nur online lesbar
000644511 520__ $$aHybrid organic-inorganic perovskites tend to undergo several structural transformations that can be caused by temperature, humidity and light. One of the striking is light-induced halide phase segregation in mixed lead-halide perovskites, i.e., formation of I-rich and Br-rich domains by the illumination with visible light [1]. This effect influences the homogeneity of the chemical composition of the mixed perovskite phase, influence the band gaps and therefore it has strong impact on the perovskite-based photovoltaic devices. Several microscopic mechanisms have been proposed to explain this effect, but the full understanding is yet to be obtained [2].In this work, we used X-ray photon correlation spectroscopy (XPCS) [3], to perform time-resolved studies of the light-induced phase segregation in (CH3NH3)PbBr1.8I1.2 [4] and track the formation of pure (CH3NH3)PbBrI3 and (CH3NH3)PbI3. This was done by observing the (001) diffraction peak from the cubic perovskite lattice and, specifically, quantifying the dynamics of coherent speckles originating from domains with different halide concentration.We observe that the phase segregation is characterized by three distinct time scales corresponding to the rapid formation of small seeds of the I-rich phase, fluctuations of the ion distribution around the quasi-equilibrium state (dynamics), and a directional drift of the ions within the crystal grains (kinetics). We also investigate a series of samples with interstitials and vacancies in the halide sublattice [5] and observe the influence of defects in the halide sublattice on phase separation. We find that samples with interstitial halides exhibit slower phase separation as samples with vacancies in the halide sublattice.
000644511 536__ $$0G:(DE-HGF)POF4-632$$a632 - Materials – Quantum, Complex and Functional Materials (POF4-632)$$cPOF4-632$$fPOF IV$$x0
000644511 536__ $$0G:(DE-HGF)POF4-6G3$$a6G3 - PETRA III (DESY) (POF4-6G3)$$cPOF4-6G3$$fPOF IV$$x1
000644511 588__ $$aDataset connected to CrossRef Conference
000644511 693__ $$0EXP:(DE-H253)P-P10-20150101$$1EXP:(DE-H253)PETRAIII-20150101$$6EXP:(DE-H253)P-P10-20150101$$aPETRA III$$fPETRA Beamline P10$$x0
000644511 7001_ $$0P:(DE-H253)PIP1008437$$aSchreiber, Frank$$b1
000644511 7001_ $$0P:(DE-H253)PIP1024691$$aRysov, Rustam$$b2
000644511 7001_ $$0P:(DE-H253)PIP1100675$$aUnger, Frederik$$b3
000644511 7001_ $$0P:(DE-H253)PIP1088034$$aKneschaurek, Ekaterina$$b4
000644511 7001_ $$0P:(DE-H253)PIP1083393$$aHagara, Jakub$$b5
000644511 7001_ $$0P:(DE-H253)PIP1101502$$aZimmermann, Paul$$b6
000644511 7001_ $$0P:(DE-H253)PIP1106429$$aSchwartzkopff, Sebastian$$b7
000644511 7001_ $$0P:(DE-H253)PIP1017835$$aPithan, Linus$$b8
000644511 7001_ $$0P:(DE-H253)PIP1081202$$aLapkin, Dmitry$$b9
000644511 7001_ $$0P:(DE-H253)PIP1081858$$aHinderhofer, Alexander$$b10
000644511 7001_ $$0P:(DE-H253)PIP1006002$$aWestermeier, Fabian$$b11
000644511 7001_ $$0P:(DE-H253)PIP1007141$$aSprung, Michael$$b12
000644511 7001_ $$aVaynzof, Yana$$b13
000644511 7001_ $$0P:(DE-H253)PIP1098220$$aPaulus, Fabian$$b14
000644511 7001_ $$0P:(DE-H253)PIP1088631$$aMerten, Lena$$b15
000644511 773__ $$a10.29363/nanoge.perfunpro.2025.038
000644511 8564_ $$uhttps://doi.org/10.29363/nanoge.perfunpro.2025.038
000644511 909CO $$ooai:bib-pubdb1.desy.de:644511$$pVDB
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1014884$$aExternal Institute$$b0$$kExtern
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1008437$$aExternal Institute$$b1$$kExtern
000644511 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1024691$$aDeutsches Elektronen-Synchrotron$$b2$$kDESY
000644511 9101_ $$0I:(DE-588)1043621512$$6P:(DE-H253)PIP1024691$$aEuropean XFEL$$b2$$kXFEL.EU
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1100675$$aExternal Institute$$b3$$kExtern
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1088034$$aExternal Institute$$b4$$kExtern
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1083393$$aExternal Institute$$b5$$kExtern
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1101502$$aExternal Institute$$b6$$kExtern
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1106429$$aExternal Institute$$b7$$kExtern
000644511 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1017835$$aDeutsches Elektronen-Synchrotron$$b8$$kDESY
000644511 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1081202$$aDeutsches Elektronen-Synchrotron$$b9$$kDESY
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1081202$$aExternal Institute$$b9$$kExtern
000644511 9101_ $$0I:(DE-588)1043621512$$6P:(DE-H253)PIP1081202$$aEuropean XFEL$$b9$$kXFEL.EU
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1081858$$aExternal Institute$$b10$$kExtern
000644511 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1006002$$aDeutsches Elektronen-Synchrotron$$b11$$kDESY
000644511 9101_ $$0I:(DE-588)1043621512$$6P:(DE-H253)PIP1006002$$aEuropean XFEL$$b11$$kXFEL.EU
000644511 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1007141$$aDeutsches Elektronen-Synchrotron$$b12$$kDESY
000644511 9101_ $$0I:(DE-588)1043621512$$6P:(DE-H253)PIP1007141$$aEuropean XFEL$$b12$$kXFEL.EU
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1098220$$aExternal Institute$$b14$$kExtern
000644511 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1088631$$aExternal Institute$$b15$$kExtern
000644511 9131_ $$0G:(DE-HGF)POF4-632$$1G:(DE-HGF)POF4-630$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vMaterials – Quantum, Complex and Functional Materials$$x0
000644511 9131_ $$0G:(DE-HGF)POF4-6G3$$1G:(DE-HGF)POF4-6G0$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lGroßgeräte: Materie$$vPETRA III (DESY)$$x1
000644511 9141_ $$y2025
000644511 9201_ $$0I:(DE-H253)HAS-User-20120731$$kDOOR ; HAS-User$$lDOOR-User$$x0
000644511 9201_ $$0I:(DE-H253)FS-EC-20120731$$kFS-EC$$lFS-Experiment Control$$x1
000644511 9201_ $$0I:(DE-H253)FS-PET-S-20190712$$kFS-PET-S$$lExperimentebetreuung PETRA III$$x2
000644511 980__ $$aconf
000644511 980__ $$aVDB
000644511 980__ $$aI:(DE-H253)HAS-User-20120731
000644511 980__ $$aI:(DE-H253)FS-EC-20120731
000644511 980__ $$aI:(DE-H253)FS-PET-S-20190712
000644511 980__ $$aUNRESTRICTED