Tailoring Mixed-Halide, Wide-Gap Perovskites via Multistep Conversion Process

Dowon Bae; Axel Palmstrom; Katherine Roelofs; Bastian Mei; Ib Chorkendorff; Stacey F. Bent; Peter C.K. Vesborg

doi:10.1021/acsami.6b01246

journal article·2016-06-15Open access

Tailoring Mixed-Halide, Wide-Gap Perovskites via Multistep Conversion Process

Dowon Bae, Axel Palmstrom, Katherine Roelofs, Bastian Mei, Ib Chorkendorff, Stacey F. Bent, Peter C.K. Vesborg

ACS Applied Materials & Interfaces· Volume 8· Issue 23

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Source abstract

Abstract

Wide-band-gap mixed-halide CH3NH3PbI3-XBrX-based solar cells have been prepared by means of a sequential spin-coating process. The spin-rate for PbI2 as well as its repetitive deposition are important in determining the cross-sectional shape and surface morphology of perovskite, and, consequently, J-V performance. A perovskite solar cell converted from PbI2 with a dense bottom layer and porous top layer achieved higher device performance than those of analogue cells with a dense PbI2 top layer. This work demonstrates a facile way to control PbI2 film configuration and morphology simply by modification of spin-coating parameters without any additional chemical or thermal post-treatment.

Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials Materials processing

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Individual Nanoparticle Functionality, Department of Physics, Technical University of Denmark, Building 311, Fysikvej, DK-2800 Kgs, Lyngby, Denmark

Department of Chemical Engineering, Stanford University, Stanford, California 94305-5025, United States

Department of Materials Science and Engineering, Stanford University, Stanford, California 94305-4034, United States

Funding

Det Frie Forskningsråd · U.S. Department of Energy · Precourt Institute for Energy, Stanford University

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