Abstract: Materials, methods and system for transparent photovoltaic devices are disclosed, such as those are transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices make use of transparent electrodes and visibly transparent UV acceptor molecules and structurally related visibly transparent photoactive compounds, which may be useful as photoactive materials, optical materials, and/or buffer materials.

Abstract: A sensing system comprises an electrochemical chip having an arrangement of electrodes configured for electrochemical sensing; a microfluidic system having fluidic channels leading to ports on a surface of the sensing system, for delivering to a plant part a substrate for a reporter enzyme expressed by the plant; and an attachment system for attaching the surface of the sensing system to a surface of the plant part in a manner that the fluidic ports contact the surface of the plant part.

Abstract: Disclosed herein are visibly transparent photovoltaic devices, such as color-neutral visibly transparent photovoltaic devices. A color-neutral visibly transparent photovoltaic device includes a visibly transparent substrate and a first visibly transparent electrode coupled to the visibly transparent substrate. The device also includes a second visibly transparent electrode and a visibly transparent photoactive layer between the first visibly transparent electrode and the second visibly transparent electrode. The visibly transparent photoactive layer is configured to convert at least one of NIR light or UV light into photocurrent and is characterized by an absorption spectrum with a peak in the NIR or UV spectrum. The device further includes a visibly absorbing material characterized by a second absorption spectrum with a second peak in the visible spectrum, where the second absorption spectrum is complementary to the absorption spectrum.

Abstract: Visibly transparent photovoltaic devices having bulk heterojunctions (BHJ) are disclosed. Such devices are transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices may include bottom and top visibly transparent electrodes, as well as multiple stacked BHJ active layers that have complementary absorption characteristics. For example, a first BHJ active layer may have an absorption spectrum that is complementary to an absorption spectrum of a second BHJ active layer.

Abstract: Photovoltaic devices having photoactive layers coupled to buffer layers are disclosed. Such devices may be transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices may include a p-phenylene layer that acts as a buffer layer. The photovoltaic devices may include one or more photoactive layers. The one or more photoactive layers may include a single planar heterojunction, a single bulk heterojunction (BHJ), or multiple stacked BHJs that have complementary absorption characteristics, among other possibilities.

Abstract: Materials, methods and system for transparent photovoltaic devices are disclosed, such as those are transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices make use of transparent electrodes and visibly transparent UV acceptor molecules and structurally related visibly transparent photoactive compounds, which may be useful as photoactive materials, optical materials, and/or buffer materials.

Abstract: A photovoltaic module includes a first transparent electrode layer characterized by a first sheet resistance, a second transparent electrode layer, and a photovoltaic material layer. The photovoltaic material layer is located between the first transparent electrode layer and the second transparent electrode layer. The photovoltaic module also includes a first busbar having a second sheet resistance lower than the first sheet resistance. The first transparent electrode layer, the second transparent electrode layer, and the photovoltaic material layer have an aligned region that forms a central transparent area of the photovoltaic module. The central transparent area including a plurality of sides. The first busbar is in contact with the first transparent electrode layer adjacent to at least a portion of each of the plurality of sides of the central transparent area.

Abstract: A photovoltaic module includes a first transparent electrode layer characterized by a first sheet resistance, a second transparent electrode layer, and a photovoltaic material layer. The photovoltaic material layer is located between the first transparent electrode layer and the second transparent electrode layer. The photovoltaic module also includes a first busbar having a second sheet resistance lower than the first sheet resistance. The first transparent electrode layer, the second transparent electrode layer, and the photovoltaic material layer have an aligned region that forms a central transparent area of the photovoltaic module. The central transparent area including a plurality of sides. The first busbar is in contact with the first transparent electrode layer adjacent to at least a portion of each of the plurality of sides of the central transparent area.

Abstract: A transparent photovoltaic device includes a transparent substrate and a transparent bottom electrode coupled to the transparent substrate. The transparent photovoltaic device also includes an active layer coupled to the transparent bottom electrode and a transparent multilayer top electrode that includes a seed layer coupled to the active layer and a metal layer coupled to the seed layer. The transparent photovoltaic device is characterized by an average visible transmission (AVT) greater than 25% and a top electrode sheet resistance that is less than 100 Ohm/sq.

Abstract: An electricity generating window includes a first glass pane, a second glass pane, and a photovoltaic device formed on an inner surface of the first glass pane or an inner surface of the second glass pane. The photovoltaic device includes a first transparent electrode layer, a second transparent electrode layer, and one or more active layers configured to transmit visible light and absorb ultraviolet or near-infrared light. In some embodiments, the electricity generating window also includes a spacer configured to separate the first glass pane and the second glass pane by a cavity. In some embodiments, the electricity generating window also includes one or more functional layers, such as an electrochromic layer or a low-E layer for reflecting infrared light.

Abstract: Materials, methods and system for transparent photovoltaic devices are disclosed, such as those are transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices make use of transparent electrodes and visibly transparent UV acceptor molecules and structurally related visibly transparent photoactive compounds, which may be useful as photoactive materials, optical materials, and/or buffer materials.

Abstract: Visibly transparent photovoltaic devices are disclosed, such as those are transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices make use of transparent electrodes and near-infrared absorbing visibly transparent photoactive compounds, optical materials, and/or buffer materials.

Abstract: Visibly transparent photovoltaic devices are disclosed, such as those are transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices make use of transparent electrodes and near-infrared absorbing visibly transparent photoactive compounds, optical materials, and/or buffer materials.

Abstract: Visibly transparent photovoltaic devices are disclosed, such as those are transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices make use of transparent electrodes and near-infrared absorbing visibly transparent photoactive compounds, optical materials, and/or buffer materials.

Abstract: A photovoltaic module includes a first transparent electrode layer characterized by a first sheet resistance, a second transparent electrode layer, and a photovoltaic material layer. The photovoltaic material layer is located between the first transparent electrode layer and the second transparent electrode layer. The photovoltaic module also includes a first busbar having a second sheet resistance lower than the first sheet resistance. The first transparent electrode layer, the second transparent electrode layer, and the photovoltaic material layer have an aligned region that forms a central transparent area of the photovoltaic module. The central transparent area including a plurality of sides. The first busbar is in contact with the first transparent electrode layer adjacent to at least a portion of each of the plurality of sides of the central transparent area.

Abstract: A photodetector device includes multiple organic photodetector subcells arranged in a stack, each organic photodetector subcell being configured to generate an electrical current in response to absorbing light over a corresponding range of wavelengths, in which each organic photodetector subcell includes at least one electron donor material and at least one electron acceptor material.

Abstract: A photovoltaic device includes a first heterojunction layer having a first donor type organic material and a first acceptor type organic material, in which a concentration of at least one of the first donor type organic material and the first acceptor type organic material is graded continuously from a first side of the first heterojunction layer to a second side of the first heterojunction layer.

Abstract: A photodetector device includes multiple organic photodetector subcells arranged in a stack, each organic photodetector subcell being configured to generate an electrical current in response to absorbing light over a corresponding range of wavelengths, in which each organic photodetector subcell includes at least one electron donor material and at least one electron acceptor material.

Abstract: A photovoltaic device includes a first heterojunction layer having a first donor type organic material and a first acceptor type organic material, in which a concentration of at least one of the first donor type organic material and the first acceptor type organic material is graded continuously from a first side of the first heterojunction layer to a second side of the first heterojunction layer.