An Organic Light-Emitting Diode (OLED) array substrate and a display apparatus. The OLED array substrate includes a base substrate, a pixel driving circuit and an OLED display element layer which are arranged on the base substrate. The OLED array substrate further includes a solar cell, the solar cell is arranged on a side of the pixel driving circuit which faces an incident ambient light, the solar cell and the pixel driving circuit are insulated from each other, and the solar cell and the OLED display element layer are insulated from each other.

The present invention provides a solid junction photoelectric conversion element module including a first photoelectric conversion element, a second photoelectric conversion element, a connection portion, and a base material. The first photoelectric conversion element and the second photoelectric conversion element are disposed adjacently to each other on a surface of the base material. The first photoelectric conversion element sequentially includes a first conductive layer, a power generation layer including a perovskite layer, and a second conductive layer, and the first conductive layer of the first photoelectric conversion element is in contact with the base material. The second photoelectric conversion element sequentially includes a first conductive layer, a power generation layer including a perovskite layer, and a second conductive layer, and the first conductive layer of the second photoelectric conversion element is in contact with the base material.

A solar cell includes: a first electrode; a first hole transport layer containing nickel; an inorganic material layer containing titanium; a light-absorbing layer converting light into electric charge; and a second electrode. The first electrode, the first hole transport layer, the inorganic material layer, the light-absorbing layer, and the second electrode are layered in that order. The light-absorbing layer contains a perovskite compound represented by a formula AMX3, where A is a monovalent cation, M is a divalent cation, and X is a monovalent anion.

A method for improving contact resistance of a multi-junction solar cell having a front and a back and multiple subcells, including: a) delivering the solar cell with front and back contacts in grid, strip or transparent form; b) contact-connecting one region of the back contact to a contact device connected to one pole of a voltage source, and the front contact or another region of the back contact, which is electrically insulated from the region, to another contact device, which is connected to the other pole of the voltage source; c) applying a voltage against the forward direction of the solar cell to the contacts, the voltage smaller than a solar cell breakdown voltage; d) guiding a point light source over the solar cell, a subregion of the front or back being illuminated, inducing current in the subregion, and illuminating the subregion with light beams of different wavelengths.

A method for improving contact resistance of a multi-junction solar cell having a front and a back and multiple subcells, including: a) delivering the solar cell with front and back contacts in grid, strip or transparent form; b) contact-connecting one region of the back contact to a contact device connected to one pole of a voltage source, and the front contact or another region of the back contact, which is electrically insulated from the region, to another contact device, which is connected to the other pole of the voltage source; c) applying a voltage against the forward direction of the solar cell to the contacts, the voltage smaller than a solar cell breakdown voltage; d) guiding a point light source over the solar cell, a subregion of the front or back being illuminated, inducing current in the subregion, and illuminating the subregion with light beams of different wavelengths.

The present invention concerns a method for deposition layers of an electronic device by slot-die deposition. Preferably, the method comprises slot-die deposition of formulation for providing compact inorganic layers, mesoporous inorganic layers, a carbon layer and a layer comprising organic-inorganic perovskite. In a preferred embodiment, the layers of a monolithic perovskite solar cell are entirely deposited by slot-die deposition. The method renders the manufacturing process of such electronic devices more efficient.

An optoelectronic device has a layered construction, comprising a base layer, a first conductive layer, a photoactive layer and a second conductive layer. Plural separation channels extending through the photoactive layer and the first conductive layer separate the photoactive layer into photoactive regions, and insulator material extends through the respective separation channels to the base layer. Between adjacent photoactive regions, electrical connectors extend inside the lateral extent of the insulator material between a surface of a second electrode that is in electrical contact with one photoactive region to an opposing surface of a first electrode that is in electrical contact with the other photoactive region. By forming the electrical connectors extend inside the lateral extent of the insulator material, the overall size of the connection is minimized.

Techniques for integrating photovoltaics into wearables, such as eyewear, are provided. In one aspect, a method of forming a lens for photovoltaic eyewear includes: forming a semitransparent photovoltaic film on at least a portion of a viewable area of the lens, wherein the semitransparent photovoltaic film includes an inorganic absorber material having a band gap of from about 1.4 eV to about 2.2 eV, and ranges therebetween. The semitransparent photovoltaic film can be configured to block greater than about 99.9% UVA, UVB, and UVC light rays, and from about 95% to about 99%, and ranges therebetween, of HEV light rays from passing therethrough. Photovoltaic eyewear formed by the present techniques is also provided.

An element includes a first substrate and a layer including a first conductive layer with a first conductive portion and a second conductive layer. The element includes a cell including the first conductive portion, a second substrate and a sealing portion. A groove is formed between the first and second conductive layers, the element includes an insulating layer provided between the sealing portion and the first substrate, and an outer circumferential edge of the insulating layer is provided to surround the entire sealing portion. The insulating layer covers and hides a portion of the first conductive layer, which protrudes outside the sealing portion, inside from the outer circumferential edge of the insulating layer and outside the sealing portion, enters the groove and covers a part of the second conductive layer, and the rest of the second conductive layer is exposed.

The present invention relates to an optoelectronic device comprising: (a) a substrate comprising at least one first electrode, which at least one first electrode comprises a first electrode material, and at least one second electrode, which at least one second electrode comprises a second electrode material; and (b) a photoactive material disposed on the substrate, which photoactive material is in contact with the at least one first electrode and the at least one second electrode, wherein the substrate comprises: a layer of the first electrode material; and, disposed on the layer of the first electrode material, a layer of an insulating material, which layer of an insulating material partially covers the layer of the first electrode material; and, disposed on the layer of the insulating material, the second electrode material, and wherein the photoactive material comprises a crystalline compound, which crystalline compound comprises: one or more first cations selected from metal or metalloid cations; one or more second cations selected from Cs.sup.+RB.sup.+, K.sup.+, NH.sup.4 + and organic cations; and one or more halide or chalcogenide anions. A substrate comprising a first and second electrode and processes are also described.