000256599 001__ 256599
000256599 005__ 20190619220042.0
000256599 0247_ $$2doi$$a10.1002/adfm.201803801
000256599 037__ $$aARTICLE
000256599 245__ $$aA Facile Preparative Route of Nanoscale Perovskites over Mesoporous Metal Oxide Films and Their Applications to Photosensitizers and Light Emitters
000256599 260__ $$c2018-08-01
000256599 269__ $$a2018-08-01
000256599 336__ $$aJournal Articles
000256599 520__ $$aBy two‐step sequential Pb2+ adsorption and reaction with methylammonium‐iodide (MAI) or ‐bromide (MABr) at a low concentration level of 0.06–0.10 m over mesoporous TiO2 or ZrO2 film, a well‐defined nanoscale CH3NH3PbI3 (MAPbI3) photosensitizer or CH3NH3PbBr3 (MAPbBr3) light emitter could be prepared in situ, respectively in a reproducible and atom‐economical way. The as‐prepared nanoscale perovskites are compared with their thin film counterparts in terms of light absorption/emission, crystallinity, surface morphology, and energy‐conversion efficiency. The nanoscale perovskite‐decorated films display more transparency than the bulky film due to the much lower amount deposited, while blueshifted and overwhelmingly brighter photoluminescence is observed in the “nano” relative to the “bulk” due to quantum size confinement. Transmission electron microscopy images also clearly show that a few nanometer‐sized perovskite dots are deposited homogeneously over the surface of TiO2‐ or ZrO2‐particulate film in the course of the current preparative route. When the nano‐MAPbI3 is tested as a photosensitizer in a solid‐state dye‐sensitized solar cell configuration with a very thin (≈650 nm) TiO2 mesoporous film, it has a promising initial power conversion efficiency of 6.23%, which outperformed the result of 2.28% from a typical organic molecular dye coded as MK‐2.
000256599 700__ $$aLee, Hyo Joong
000256599 700__ $$g243815$$aCho, Kyung Taek$$0248328
000256599 700__ $$g251158$$aPaek, Sanghyun$$0248384
000256599 700__ $$g231396$$aLee, Yonghui$$0247018
000256599 700__ $$g258024$$aHuckaba, Aron Joel$$0249205
000256599 700__ $$g223482$$aQueloz, Valentin Ianis Emmanuel$$0251120
000256599 700__ $$g256885$$aZimmermann, Iwan$$0248916
000256599 700__ $$g263917$$aGrancini, Giulia$$0249373
000256599 700__ $$0242227$$aOveisi, Emad$$g191661
000256599 700__ $$aYoo, So-Min
000256599 700__ $$aLee, Seul-Yi
000256599 700__ $$aShin, Taeho
000256599 700__ $$aKim, Myoung
000256599 700__ $$0240422$$aNazeeruddin, Mohammad Khaja$$g105958
000256599 773__ $$tAdvanced Functional Materials$$q1803801
000256599 8560_ $$fmdkhaja.nazeeruddin@epfl.ch
000256599 909C0 $$xU10192$$pCIME$$0252025$$mcecile.hebert@epfl.ch$$zBorel, Alain
000256599 909C0 $$yApproved$$pGMF$$xU12965$$mmdkhaja.nazeeruddin@epfl.ch$$zBorel, Alain$$0252519
000256599 909CO $$pSB$$particle$$ooai:infoscience.epfl.ch:256599
000256599 960__ $$aemad.oveisi@epfl.ch
000256599 961__ $$apierre.devaud@epfl.ch
000256599 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000256599 980__ $$aARTICLE
000256599 981__ $$aoverwrite