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US 11,328,876 B2Granted
Light-absorbing material containing compound with perovskite structure and solar cell including the same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTakeyuki Sekimoto, Michio Suzuka, Tomoyasu Yokoyama, Yoshiko Miyamoto, Taisuke Matsui
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Abstract
A light-absorbing material contains a compound represented by the composition formula HC(NH2)2SnI3 and having a perovskite structure. A solid-state 1H-NMR spectrum, which is obtained by 1H-14N HMQC measurement in two-dimensional NMR at 25° C., of the compound includes a first peak at 6.9 ppm and a second peak at 7.0 ppm. A peak intensity of the first peak is equal to 80% or more of a peak intensity of the second peak.
Claims12
A light-absorbing material comprising:
- a compound represented by a composition formula HC(NH2)2SnI3 and comprising a perovskite crystal structure in which an organic molecule in the perovskite crystal structure is provided in a metastable bonding state, the compound being produced by inverse temperature crystallization using γ-valerolactone as a solvent, wherein:
- a solid-state 1H-NMR spectrum, which is obtained by 1H-14N HMQC measurement in two-dimensional NMR at 25° C., of the compound includes a first peak at 6.9 ppm and a second peak at 7.0 ppm, and
- a peak intensity of the first peak is equal to 80% or more of a peak intensity of the second peak.
A solar cell comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- a light-absorbing layer that is disposed between the first electrode and the second electrode and generates electric charges by photoelectric conversion, wherein:
- at least one electrode selected from the group consisting of the first electrode and the second electrode is light-transmissive,
- the light-absorbing layer contains a light-absorbing material,
- the light-absorbing material contains a compound represented by a composition formula HC(NH2)2SnI3 and comprising a perovskite crystal structure in which an organic molecule in the perovskite crystal structure is provided in a metastable bonding state, the compound being produced by inverse temperature crystallization using γ-valerolactone as a solvent,
- a solid-state 1H-NMR spectrum, which is obtained by 1H-14N HMQC measurement in two-dimensional NMR at 25° C., of the compound includes a first peak at 6.9 ppm and a second peak at 7.0 ppm, and
- a peak intensity of the first peak is equal to 80% or more of a peak intensity of the second peak.
6 more elements
A light-absorbing material comprising:
- a compound represented by a composition formula HC(NH2)2SnI3, comprising a perovskite crystal structure in which an organic molecule in the perovskite crystal structure is provided in a metastable bonding state, the compound being produced by inverse temperature crystallization using γ-valerolactone as a solvent, and having a spin-lattice relaxation time T1 of 33 seconds or more and 45 seconds or less at 25° C. as measured by solid-state 1H-NMR spectroscopy.
A solar cell comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- a light-absorbing layer that is disposed between the first electrode and the second electrode and generates electric charges by photoelectric conversion, wherein:
- at least one electrode selected from the group consisting of the first electrode and the second electrode is light-transmissive,
- the light-absorbing layer contains a light-absorbing material, and
- the light-absorbing material contains a compound represented by a composition formula HC(NH2)2SnI3, comprising a perovskite crystal structure in which an organic molecule in the perovskite crystal structure is provided in a metastable bonding state, the compound being produced by inverse temperature crystallization using γ-valerolactone as a solvent, and having a spin-lattice relaxation time T1 of 33 seconds or more and 45 seconds or less at 25° C. as measured by solid-state 1H-NMR spectroscopy.
4 more elements
A light-absorbing material comprising:
- a compound represented by a composition formula HC(NH2)2SnI3 and comprising a perovskite crystal structure in which an organic molecule in the perovskite crystal structure is provided in a metastable bonding state, the compound being produced by inverse temperature crystallization using γ-valerolactone as a solvent, wherein:
- a fluorescence spectrum of the compound has a peak in a range of 1.33 eV or more and 1.39 eV or less.
A solar cell comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- a light-absorbing layer that is disposed between the first electrode and the second electrode and generates electric charges by photoelectric conversion, wherein:
- at least one electrode selected from the group consisting of the first electrode and the second electrode is light-transmissive,
- the light-absorbing layer contains a light-absorbing material,
- the light-absorbing material contains a compound represented by a composition formula HC(NH2)2SnI3 and comprising a perovskite crystal structure in which an organic molecule in the perovskite crystal structure is provided in a metastable bonding state, the compound being produced by inverse temperature crystallization using γ-valerolactone as a solvent, and
- a fluorescence spectrum of the compound has a peak in a range of 1.33 eV or more and 1.39 eV or less.
5 more elements
Dependencies are inferred from the claim text.