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van der Waals Epitaxial Growth of 2D Metal-Porphyrin Framework Devided Thin Films for Dye-Sensitized Solar Cells

Wang, Yan-Yue; Chen, Shu-Mei; Haldar, Ritesh; Wöll, Christof; Gu, Zhi-Gang; Zhang, Jian

Abstract (englisch):
In this work, monolithic, crystalline, porous, and oriented porphyrin thin films are grown using a novel van der Waals layer‐by‐layer (lbl) epitaxial growth protocol, yielding an unusual AB‐stacking motif of these interesting macrocycles units. Subsequently, these surface‐mounted metal‐organic frameworks (SURMOFs) are transformed by thermal treatment to yield well‐performing counter electrodes (CEs) for dye‐sensitized solar cells. During this calcination, the heterocyclic macrocycles are metalated, yielding compact, homogeneous, and very stable metalloporphyrin thin films (ZnTCPP‐C) with excellent CE performance. For thin films fabricated using three lbl cycles (thickness ≈17 nm), the power conversion efficiency is found to amount to 5.63%, making it a promising candidate to replace Pt CE (6.72%). Such calcined SURMOFs carry huge potential for fabricating electronic and photovoltaic devices.


Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2196-7350
KITopen-ID: 1000087740
HGF-Programm 43.22.01 (POF III, LK 01)
Erschienen in Advanced materials interfaces
Band 5
Heft 21
Seiten Art.Nr. 1800985
Vorab online veröffentlicht am 19.09.2018
Schlagworte 2D materials; metal-organic frameworks; thin films; van der Waals epitaxial growth
Nachgewiesen in Web of Science
Scopus
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