Etching of electrodeposited Cu2O films using ammonia solution for photovoltaic applications

Literature Information

Publication Date 2016-02-09
DOI 10.1039/C5CP06385J
Impact Factor 3.676
Authors

Changqiong Zhu, Matthew J. Panzer


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Abstract

Impurities at the surface of electrodeposited p-Cu2O films have been efficiently removed through the use of concentrated aqueous ammonia solution as a wet etching agent. The performance of the Cu2O homojunction photovoltaic devices incorporating etched p-Cu2O as the bottom layer is higher compared to devices with as-deposited p-Cu2O layers due to an improvement of the homojunction interface quality. Reducing the density of defect states that act as carrier recombination centers led to larger open circuit voltages. The ammonia etchant has been found to preferentially interact with the {100} facets of Cu2O and expose a greater number of {111} facets, resulting in increased interface area for etched homojunction devices, which also improved short circuit current density values.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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