This application provides a perovskite solar cell structurally including a transparent electrode, an electron transport layer, a perovskite layer, a hole transport layer and a second electrode in sequence, where the perovskite layer may include a main perovskite layer and a one-dimensional perovskite coating layer covering surface and periphery of the main perovskite layer, where the one-dimensional perovskite coating layer may include: a first overlay layer disposed between the main perovskite layer and the electron transport layer; and a second overlay layer disposed between the main perovskite layer and the hole transport layer.

A perovskite solar battery, including a transparent conductive glass substrate, a hole transport layer, a perovskite light-absorbing layer, an electron transport layer, and an electrode are described. The hole transport layer is a nickel oxide hole transport layer. Simple-substance nickel exists on a contact surface of the hole transport layer in contact with the perovskite light-absorbing layer. On the contact surface of the hole transport layer in contact with the perovskite light-absorbing layer, a ratio between simple-substance nickel and trivalent nickel is 85:15 to 99:1, optionally 90:10 to 99:1, and further optionally 95:5 to 99:1. This application further provides a method for preparing a perovskite solar battery.

A perovskite solar battery, including a transparent conductive glass substrate, a hole transport layer, a perovskite light-absorbing layer, an electron transport layer, and an electrode are described. The hole transport layer is a nickel oxide hole transport layer. Simple-substance nickel exists on a contact surface of the hole transport layer in contact with the perovskite light-absorbing layer. On the contact surface of the hole transport layer in contact with the perovskite light-absorbing layer, a ratio between simple-substance nickel and trivalent nickel is 85:15 to 99:1, optionally 90:10 to 99:1, and further optionally 95:5 to 99:1. This application further provides a method for preparing a perovskite solar battery.

The present invention relates to a method for forming a charge transport layer on a substrate. Specifically, the present invention provides a method for manufacturing a device comprising a charge transport layer, which enables a uniform charge transport layer to be formed by a solution process even on a large area substrate. The method for manufacturing a device comprising a charge transport layer, of the present invention, may comprise: a charge forming step of forming first polarity charges on a transparent conductive substrate; a polymer electrolyte coating forming step of forming, on the transparent conductive substrate on which the first polarity charges are formed, a polymer electrolyte coating layer of second polarity charges which have the opposite polarity to that of the first polarity charges; and a first charge transport layer forming step of coating the polymer electrolyte coating layer with nanoparticles having the first polarity charges so as to form a first charge transport layer.

Provided is a semiconductor element that can generate power with high efficiency and has high durability.

A multilayer junction photoelectric conversion element according to an embodiment includes: a first electrode; a first photoactive layer including a perovskite semiconductor; a first doped layer; a tunnel insulating film; a second photoactive layer containing silicon; and a second electrode, in this order. A thickness of the tunnel insulating film is 1 nm to 15 nm, and the first doped layer contains silicon and a trivalent or pentavalent element as an impurity. The element can be manufactured by a method including forming a bottom cell including a second active layer and then forming a first photoactive layer by coating.

The present disclosure relates to a composition that includes a perovskite having a surface, where the surface includes a pyridine compound. In some embodiments of the present disclosure, the pyridine compound may include an amine functional group. In some embodiments of the present disclosure, the pyridine compound may be selected from a group that includes N(2-methylpyridine)A, N(3-methylpyridine)A, N(4-(methyl)pyridine)A, N(3-(2-ethyl)pyridine)A, and N(4-(2-ethyl)pyridine)A, where A is a cation, and the pyridine compound has an ionic radius larger than 10 Å.

The present disclosure relates to a composition that includes a perovskite having a surface, where the surface includes a pyridine compound. In some embodiments of the present disclosure, the pyridine compound may include an amine functional group. In some embodiments of the present disclosure, the pyridine compound may be selected from a group that includes N(2-methylpyridine)A, N(3-methylpyridine)A, N(4-(methyl)pyridine)A, N(3-(2-ethyl)pyridine)A, and N(4-(2-ethyl)pyridine)A, where A is a cation, and the pyridine compound has an ionic radius larger than 10 Å.

An electron transport includes a metal co-doped zinc oxide compound having a formula Mn.sub.xCo.sub.0.015Zn.sub.1−xO, wherein x has a value in a range of 0.001 to 0.014. The electron transport material of the present disclosure may be used in a perovskite solar cell.

Provided are a material that achieves higher sensitivity and higher resolution of a photoelectric conversion element for imaging, and a photoelectric conversion element for imaging using the above material. A material for a photoelectric conversion element for imaging, the material having a structure of the following general formula (1), wherein L each independently represents a single bond, an aromatic hydrocarbon group having 6 to 30 carbon atoms, or the like; “a” represents the number of substitutions, and represents an integer of 1 to 6; Ar.sup.1 each independently represents a group represented by the following formula (2); and Ar.sup.2 each independently represents an aromatic heterocyclic group having 3 to 30 carbon atoms and containing a nitrogen-containing six-membered cyclic structure, or the like, provided that a group bonded to L is the aromatic heterocyclic group. The ring B represents a heterocyclic ring represented by the formula (2a) and fused with an adjacent ring at any position; “*” in the formula (2) represents a bonding position to L in the formula (1); and X represents O, S, or N-Ar.sup.3.

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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.