Abstract
Lead-free solution-processed solid-state photovoltaic devices based on methylammonium tin iodide (CH 3 NH 3 SnI 3) perovskite semiconductor as the light harvester are reported. Featuring an optical bandgap of 1.3 eV, the CH 3 NH 3 SnI 3 perovskite material can be incorporated into devices with the organic hole-transport layer spiro-OMeTAD and show an absorption onset at 950 nm, which is significantly redshifted compared with the benchmark CH 3 NH 3 PbI 3 counterpart (1.55 eV). Bandgap engineering was implemented by chemical substitution in the form of CH 3 NH 3 SnI 3-x Br x solid solutions, which can be controllably tuned to cover much of the visible spectrum, thus enabling the realization of lead-free solar cells with an initial power conversion efficiency of 5.73% under simulated full sunlight. Further efficiency enhancements are expected following optimization and a better fundamental understanding of the internal electron dynamics and corresponding interfacial engineering. The reported CH 3 NH 3 SnI 3-x Br x perovskite solar cells represent a step towards the realization of low-cost, environmentally friendly solid-state solar cells.
| Original language | English |
|---|---|
| Pages (from-to) | 489-494 |
| Number of pages | 6 |
| Journal | Nature Photonics |
| Volume | 8 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2014 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
Cite this
Lead-free solid-state organic-inorganic halide perovskite solar cells. / Hao, Feng; Stoumpos, Constantinos C.; Cao, Duyen Hanh; Chang, Robert P. H.; Kanatzidis, Mercouri G.
In: Nature Photonics, Vol. 8, No. 6, 2014, p. 489-494.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Lead-free solid-state organic-inorganic halide perovskite solar cells
AU - Hao, Feng
AU - Stoumpos, Constantinos C.
AU - Cao, Duyen Hanh
AU - Chang, Robert P. H.
AU - Kanatzidis, Mercouri G
PY - 2014
Y1 - 2014
N2 - Lead-free solution-processed solid-state photovoltaic devices based on methylammonium tin iodide (CH 3 NH 3 SnI 3) perovskite semiconductor as the light harvester are reported. Featuring an optical bandgap of 1.3 eV, the CH 3 NH 3 SnI 3 perovskite material can be incorporated into devices with the organic hole-transport layer spiro-OMeTAD and show an absorption onset at 950 nm, which is significantly redshifted compared with the benchmark CH 3 NH 3 PbI 3 counterpart (1.55 eV). Bandgap engineering was implemented by chemical substitution in the form of CH 3 NH 3 SnI 3-x Br x solid solutions, which can be controllably tuned to cover much of the visible spectrum, thus enabling the realization of lead-free solar cells with an initial power conversion efficiency of 5.73% under simulated full sunlight. Further efficiency enhancements are expected following optimization and a better fundamental understanding of the internal electron dynamics and corresponding interfacial engineering. The reported CH 3 NH 3 SnI 3-x Br x perovskite solar cells represent a step towards the realization of low-cost, environmentally friendly solid-state solar cells.
AB - Lead-free solution-processed solid-state photovoltaic devices based on methylammonium tin iodide (CH 3 NH 3 SnI 3) perovskite semiconductor as the light harvester are reported. Featuring an optical bandgap of 1.3 eV, the CH 3 NH 3 SnI 3 perovskite material can be incorporated into devices with the organic hole-transport layer spiro-OMeTAD and show an absorption onset at 950 nm, which is significantly redshifted compared with the benchmark CH 3 NH 3 PbI 3 counterpart (1.55 eV). Bandgap engineering was implemented by chemical substitution in the form of CH 3 NH 3 SnI 3-x Br x solid solutions, which can be controllably tuned to cover much of the visible spectrum, thus enabling the realization of lead-free solar cells with an initial power conversion efficiency of 5.73% under simulated full sunlight. Further efficiency enhancements are expected following optimization and a better fundamental understanding of the internal electron dynamics and corresponding interfacial engineering. The reported CH 3 NH 3 SnI 3-x Br x perovskite solar cells represent a step towards the realization of low-cost, environmentally friendly solid-state solar cells.
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U2 - 10.1038/nphoton.2014.82
DO - 10.1038/nphoton.2014.82
M3 - Article
VL - 8
SP - 489
EP - 494
JO - Nature Photonics
JF - Nature Photonics
SN - 1749-4885
IS - 6
ER -