Abstract: A solar cell according to the present disclosure comprises a support, a photoelectric conversion element, and a sealing member. The photoelectric conversion element is in a sealed space defined by the support and the sealing member. The photoelectric conversion element comprises, in this order, a first electrode, a photoelectric conversion layer, and a second electrode, and an oxygen concentration in the sealed space is greater than or equal to 10 ppm and less than or equal to 3000 ppm in terms of volume fraction.

Abstract: A solar cell of the present disclosure includes a first electrode, a photoelectric conversion layer, an intermediate layer, a hole transport layer, and a second electrode in this order. The second electrode includes an oxide. The intermediate layer includes at least one compound selected from the group consisting of an iodide and a bromide. The compound includes a monovalent organic cation. The photoelectric conversion layer may include, for example, a perovskite compound.

Abstract: A solar cell according to the present disclosure includes a support, a photoelectric conversion element, and a sealing member. The photoelectric conversion element is in a sealed space defined by the support and the sealing member. The photoelectric conversion element includes, in this order, a first electrode, a photoelectric conversion layer, and a second electrode. An oxygen concentration in the sealed space is less than 10 ppm in terms of volume fraction, and a water vapor concentration in the sealed space is greater than or equal to 100 ppm and less than or equal to 5000 ppm in terms of volume fraction.

Abstract: A solar cell 100 includes a substrate 1, a first electrode 6, an electron transport layer 2, a first photoelectric conversion layer 3, and a coating layer 5. The first photoelectric conversion layer 3 is disposed between the first electrode 6 and the substrate 1. The substrate 1 has a first main surface and a second main surface, and the second main surface has an uneven structure. The electron transport layer 2 has a first main surface and a second main surface, and the first main surface and the second main surface each have an uneven structure. The first photoelectric conversion layer 3 has a first main surface and a second main surface. The second main surface of the substrate 1 faces the first main surface of the electron transport layer 2.

Abstract: An ionizing radiation conversion device of the present disclosure includes a first electrode, a second electrode, and an ionizing radiation conversion layer disposed between the first electrode and the second electrode. Here, the first electrode contains a first metal, the second electrode contains at least one selected from the group consisting of second metals and metal oxides, and the ionizing radiation conversion layer contains a perovskite compound. The difference of a value of electron affinity of the ionizing radiation conversion layer minus a value of work function of the first electrode is greater than or equal to 0 eV and less than or equal to 0.4 eV.

Abstract: A solar cell 100 includes a substrate 1, a first electrode 6, an electron transport layer 2, a first photoelectric conversion layer 3, and a coating layer 5. The first photoelectric conversion layer 3 is disposed between the first electrode 6 and the substrate 1. The substrate 1 has a first main surface and a second main surface, and the second main surface has an uneven structure. The electron transport layer 2 has a first main surface and a second main surface, and the first main surface and the second main surface each have an uneven structure. The first photoelectric conversion layer 3 has a first main surface and a second main surface. The second main surface of the substrate 1 faces the first main surface of the electron transport layer 2.

Abstract: A solar cell according to the present disclosure includes a first electrode, a second electrode, a photoelectric conversion layer located between the first electrode and the second electrode, and a semiconductor layer located between the first electrode and the photoelectric conversion layer, in which at least one selected from the group consisting of the first electrode and the second electrode is translucent, and the semiconductor layer contains a compound containing Na, Zn, and O.

Abstract: The solar cell of the present disclosure includes a first electrode, a photoelectric conversion layer, an intermediate layer, a hole transport layer, and a second electrode in this order, wherein the hole transport layer includes a hole transport material and an oxidant, the photoelectric conversion layer includes a perovskite compound containing iodine, and the intermediate layer includes at least one selected from the group consisting of bromide, chloride, and fluoride.

Abstract: A solar cell includes a first substrate, a first hole transport layer, a first photoelectric conversion layer containing a perovskite compound, and a second photoelectric conversion layer containing a photoelectric conversion material in this order. A band gap of the perovskite compound is greater than a band gap of the photoelectric conversion material. With respect to an absorption wavelength of the first photoelectric conversion layer 3, a refractive index nA of the first hole transport layer 2 satisfies refractive index of the first substrate?nA?refractive index of the first photoelectric conversion layer. Further, with respect to a transmission wavelength of the first photoelectric conversion layer 3 and an absorption wavelength of the second photoelectric conversion layer 5, a refractive index nB of the first hole transport layer 2 satisfies refractive index of the first substrate?nB?refractive index of the first photoelectric conversion layer.

Abstract: A solar cell includes a first substrate, a first electrode layer, a first electron transport layer, a first photoelectric conversion layer, a first hole transport layer, a second electrode layer, a third electrode layer, a second electron transport layer, a second photoelectric conversion layer, a second hole transport layer, a fourth electrode layer, and a second substrate that are disposed in the order stated. The first photoelectric conversion layer includes a first perovskite compound, and the second photoelectric conversion layer includes a second perovskite compound. The first perovskite compound has a bandgap greater than a bandgap of the second perovskite compound.

Abstract: A solar cell 100 includes a substrate 1, a first electrode 6, a carrier transport layer, such as a hole transport layer 5, a first photoelectric conversion layer 3, and a coating layer 4. The first photoelectric conversion layer is disposed between the first electrode 6 and the substrate 1. The substrate 1 has a first main surface and a second main surface, and the second main surface has an uneven structure. The first photoelectric conversion layer 3 has a first main surface and a second main surface, and the first main surface and the second main surface each have an uneven structure. The coating layer 4 has a first main surface and a second main surface, and the first main surface and the second main surface each have an uneven structure.

Abstract: A solar cell 100 includes a substrate 1, a first electrode 6, an electron transport layer 2, a first photoelectric conversion layer 3, and a coating layer 5. The first photoelectric conversion layer 3 is disposed between the first electrode 6 and the substrate 1. The substrate 1 has a first main surface and a second main surface, and the second main surface has an uneven structure. The electron transport layer 2 has a first main surface and a second main surface, and the first main surface and the second main surface each have an uneven structure. The first photoelectric conversion layer 3 has a first main surface and a second main surface. The second main surface of the substrate 1 faces the first main surface of the electron transport layer 2.

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.

Abstract: A solar cell according to the present disclosure includes a first electrode, a second electrode, a photoelectric conversion layer located between the first electrode and the second electrode, and a semiconductor layer located between the first electrode and the photoelectric conversion layer, in which at least one selected from the group consisting of the first electrode and the second electrode is translucent, and the semiconductor layer contains a compound containing Na, Zn, and O.

Abstract: A perovskite material including an organic-inorganic perovskite structure of formula (I), AnMX3 (I), n being the number of cation A and an integer >4, A being a monovalent cation selected from inorganic cations Ai and/or from organic cations Ao, M being a divalent metal cation or a combination thereof, X being a halide and/or pseudohalide anion or a combination thereof, wherein at least one cation A is selected from organic cations Ao, the inorganic cations Ai are independently selected from Li+, Na+, K+, Rb+, Cs+, or Tl+ and the organic cations Ao are independently selected from ammonium (NH4+), methyl ammonium (MA) (CH3NH3+), ethyl ammonium (CH3CH2NH3)+, formamidinium (FA) (CH(NH2)2+), methylformamidinium (CH3C(NH2)2+), guanidium (C((NH)2)3+), tetramethylammonium ((CH3)4N+), dimethylammonium ((CH3)2NH2+) or trimethylammonium ((CH3)3NH+).

Abstract: A photosensor includes a first electrode, a second electrode that opposes the first electrode, and a photoelectric conversion layer that is disposed between the first electrode and the second electrode and converts incident light into electric charges. At least one electrode selected from the group consisting of the first electrode and the second electrode is light-transmissive. The photoelectric conversion layer contains a perovskite compound. The fluorescence spectrum of the perovskite compound has a first peak at a first wavelength and a second peak at a second wavelength that is longer than the first wavelength. The photoelectric conversion layer is in ohmic contact with each of the first electrode and the second electrode.

Abstract: The present disclosure provides a solar cell including a first electrode, a second electrode, a photoelectric conversion layer disposed between the first electrode and the second electrode, and an electron transport layer disposed between the first electrode and the photoelectric conversion layer. At least one of the first electrode and the second electrode has a light-transmitting property. The photoelectric conversion layer contains a perovskite compound composed of a monovalent cation, a Sn cation, and a halogen anion. The electron transport layer contains an electron transport material containing niobium oxide. The niobium oxide is amorphous. The electron transport material has a conduction band at a bottom of which an energy level with respect to a vacuum level is greater than ?3.9 eV and less than ?3.1 eV.

Abstract: The present disclosure provides a photoabsorber containing: a perovskite compound represented by the composition formula ABX3, where A represents a monovalent cation, B represents a divalent cation including a Sn cation, and X represents a halogen anion; and a trivalent cation of a Group 3 element.

Abstract: Provided is a solar cell comprising a first electrode; a second electrode; a perovskite photoabsorber layer located between the first electrode and the second electrode; a first semiconductor layer located between the first electrode and the photoabsorber layer; and a second semiconductor layer located between the second electrode and the photoabsorber layer. At least one electrode selected from the group consisting of the first electrode and the second electrode is light-transmissive. The first semiconductor layer contains Li. The second semiconductor layer contains LiN(SO2CF3)2. The second semiconductor layer contains poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]. In the second semiconductor layer, a molar ratio of LiN(SO2CF3)2 to poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] is not less than 0.15 and not more than 0.26.

Abstract: A perovskite material including an organic-inorganic perovskite structure of formula (I), AnMX3 (I), n being the number of cation A and an integer >4, A being a monovalent cation selected from inorganic cations Ai and/or from organic cations Ao, M being a divalent metal cation or a combination thereof, X being a halide and/or pseudohalide anion or a combination thereof, wherein at least one cation A is selected from organic cations Ao, the inorganic cations Ai are independently selected from Li+, Na+, K+, Rb30, Cs+, or Tl+ and the organic cations Ao are independently selected from ammonium (NH4+), methyl ammonium (MA) (CH3NH3+), ethyl ammonium (CH3CH2NH3)+, formamidinium (FA) (CH(NH2)2+), methylformamidinium (CH3C(NH2)2+), guanidium (C((NH)2)3+), tetramethylammonium ((CH3)4N+), dimethylammonium ((CH3)2NH230) or trimethylammonium ((CH3)3NH+).