Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 18, Pages 6837-6841Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta00517a
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Funding
- Department of Chemistry
- School of Physical Sciences at the University of California, Irvine
- National Science Foundation [DGE-1321846, CHE-1338173]
- Direct For Mathematical & Physical Scien [1338173] Funding Source: National Science Foundation
- Division Of Chemistry [1338173] Funding Source: National Science Foundation
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Heavy metal toxicity and device instability are prominent limitations in the push for commercialization of photovoltaics based on low-cost, solution-processed materials. In this study, a hybrid organic-inorganic material containing trivalent bismuth and dicationic 1,6-hexanediammonium was used as the photoactive layer in solution-processed photovoltaics. These proof-of-concept photovoltaics demonstrated a stable open-circuit photovoltage of 384 +/- 12 mV and steady-state short-circuit photocurrent density of 0.101 +/- 0.020 mA cm(-2). In comparison to the widely studied lead-halide-based perovskites, the bismuth-based materials had superior coverage on mesoporous TiO2 layers as determined by scanning electron microscopy. Moreover, thermal stability tests demonstrated that these bismuth-based materials were more stable at higher temperatures than comparable lead-based materials.
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