000261852 001__ 261852
000261852 005__ 20190619220103.0
000261852 022__ $$a2050-7526
000261852 022__ $$a2050-7534
000261852 02470 $$a000443279300018$$2isi
000261852 0247_ $$a10.1039/c8tc02242a$$2doi
000261852 037__ $$aARTICLE
000261852 245__ $$aPyridination of hole transporting material in perovskite solar cells questions the long-term stability
000261852 260__ $$c2018$$aCambridge$$bROYAL SOC CHEMISTRY
000261852 269__ $$a2018-09-07
000261852 336__ $$aJournal Articles
000261852 520__ $$aIn this work, for the first time, reactive radical-cation species present in hole-transporting materials were shown to react with tert-butylpyridine additive, routinely used in hole transporting layer composition. As a result, new pyridinated products were isolated and characterized by NMR and MS analysis. Additionally, their optical and photophysical properties (i.e., solid-state ionization potentials (Ip), cyclic voltammetry (CV), UV/vis characteristics, and conductivities) were determined. Formation of the pyridinated products was confirmed in the aged perovskite solar cells by means of mass spectrometry, and shown to have negative influence on the overall device performance. We believe that these findings will help improve the stability of perovskite devices by either molecular engineering of hole-transporting materials or utilization of lessreactive or sterically hindered pyridine derivatives.
000261852 650__ $$aMaterials Science, Multidisciplinary
000261852 650__ $$aPhysics, Applied
000261852 650__ $$aMaterials Science
000261852 650__ $$aPhysics
000261852 6531_ $$alithium-salts
000261852 6531_ $$alight soaking
000261852 6531_ $$aefficient
000261852 6531_ $$aperformance
000261852 6531_ $$alayer
000261852 6531_ $$aphotovoltaics
000261852 6531_ $$apassivation
000261852 6531_ $$aconversion
000261852 700__ $$aMagomedov, Artiom
000261852 700__ $$aKasparavicius, Ernestas
000261852 700__ $$g220343$$0247535$$aRakstys, Kasparas
000261852 700__ $$g251158$$0248384$$aPaek, Sanghyun
000261852 700__ $$g207324$$0244747$$aGasilova, Natalia
000261852 700__ $$aGenevicius, Kristijonas
000261852 700__ $$aJuska, Gytis
000261852 700__ $$aMalinauskas, Tadas
000261852 700__ $$aNazeeruddin, Mohammad Khaja$$0240422$$g105958
000261852 700__ $$aGetautis, Vytautas
000261852 773__ $$k33$$j6$$q8874-8878$$tJournal Of Materials Chemistry C
000261852 8560_ $$fsunny.maye@epfl.ch
000261852 909C0 $$yApproved$$pGMF$$0252519$$mmdkhaja.nazeeruddin@epfl.ch$$zBorel, Alain$$xU12965
000261852 909CO $$pSB$$particle$$ooai:infoscience.epfl.ch:261852
000261852 961__ $$amanon.velasco@epfl.ch
000261852 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000261852 980__ $$aARTICLE
000261852 980__ $$aWoS
000261852 981__ $$aoverwrite