Photovoltaic cells
View Patent ↗This disclosure features an article that includes first and second electrodes, a photoactive layer between the first and second electrodes, and a hole carrier layer between the first electrode and the photoactive layer. The hole carrier layer includes a Cu(I)-containing material. The article is configured as a photovoltaic cell.
1. An article, comprising:
first and second electrodes,
a photoactive layer between the first and second electrodes, and
a hole carrier layer between the first electrode and the photoactive layer, the hole carrier layer comprising a Cu(I)-containing material and a binder, wherein the binder is a sol gel or a polymer selected from the group consisting of an acrylic resin, an ionic polymer, or a polymer containing an electron accepting group, wherein the Cu(I)-containing material is substantially homogeneously dispersed in the binder, wherein the hole carrier layer has a thickness of at most about 500 nm, wherein the binder is at most about 50% by volume of the hole carrier layer and wherein the article is configured as a photovoltaic cell.
2. The article of claim 1 , wherein the binder is at least about 1% by volume of the hole carrier layer.