Abstract: Imaging apparatus (100, 200) includes a photosensitive medium (302) configured to convert incident photons into charge carriers. A bias electrode (304) overlies the photosensitive medium and applies a bias potential to the photosensitive medium. One or more pixel circuits (306) are formed on a semiconductor substrate. Each pixel circuit defines a respective pixel (300) and includes first and second pixel electrodes (316, 318) coupled to collect the charge carriers from the photosensitive medium at respective first and second locations, and first and second transfer gates (326, 328) in respective proximity to the first and second pixel electrodes. Circuitry (700) is coupled to apply different, respective first and second potentials to the first and second transfer gates and to vary the first and second potentials so as to control relative proportions of the charge carriers that are collected by the first and second electrodes.

Abstract: Photovoltaic cells are fabricated in which the compositions of the light-absorbing layer and the electron-accepting layer are selected such that at least one side of the junction between these two layers is substantially depleted of charge carriers, i.e., both free electrons and free holes, in the absence of solar illumination. In further aspects of the invention, the light-absorbing layer is comprised of dual-shell passivated quantum dots, each having a quantum dot core with surface anions, an inner shell containing cations to passivate the core surface anions, and an outer shell to passivate the inner shell anions and anions on the core surface.

Abstract: Imaging apparatus (100, 200) includes a photosensitive medium (302) configured to convert incident photons into charge carriers. A bias electrode (304) overlies the photosensitive medium and applies a bias potential to the photosensitive medium. One or more pixel circuits (306) are formed on a semiconductor substrate. Each pixel circuit defines a respective pixel (300) and includes first and second pixel electrodes (316, 318) coupled to collect the charge carriers from the photosensitive medium at respective first and second locations, and first and second transfer gates (326, 328) in respective proximity to the first and second pixel electrodes. Circuitry (700) is coupled to apply different, respective first and second potentials to the first and second transfer gates and to vary the first and second potentials so as to control relative proportions of the charge carriers that are collected by the first and second electrodes.

Abstract: Photovoltaic cells are fabricated in which the compositions of the light-absorbing layer and the electron-accepting layer are selected such that at least one side of the junction between these two layers is substantially depleted of charge carriers, i.e., both free electrons and free holes, in the absence of solar illumination. In further aspects of the invention, the light-absorbing layer is comprised of dual-shell passivated quantum dots, each having a quantum dot core with surface anions, an inner shell containing cations to passivate the core surface anions, and an outer shell to passivate the inner shell anions and anions on the core surface.

Abstract: Photovoltaic cells are fabricated in which the compositions of the light-absorbing layer and the electron-accepting layer are selected such that at least one side of the junction between these two layers is substantially depleted of charge carriers, i.e., both free electrons and free holes, in the absence of solar illumination. In further aspects of the invention, the light-absorbing layer is comprised of dual-shell passivated quantum dots, each having a quantum dot core with surface anions, an inner shell containing cations to passivate the core surface anions, and an outer shell to passivate the inner shell anions and anions on the core surface.

Abstract: The present invention provides an apparatus and method for manipulating plasmons. The apparatus comprises a support structure and two or more plasmon-responsive elements. The plasmon-responsive elements are disposed adjacent the support structure and configured for interaction with electromagnetic radiation and generation of a plurality of plasmons. At least a first of the plasmon-responsive elements is configured to manipulate interaction of at least some of the plurality of plasmons with at least a second of the plasmon-responsive elements.

Abstract: Photovoltaic cells are fabricated in which the compositions of the light-absorbing layer and the electron-accepting layer are selected such that at least one side of the junction between these two layers is substantially depleted of charge carriers, i.e., both free electrons and free holes, in the absence of solar illumination. In further aspects of the invention, the light-absorbing layer is comprised of dual-shell passivated quantum dots, each having a quantum dot core with surface anions, an inner shell containing cations to passivate the core surface anions, and an outer shell to passivate the inner shell anions and anions on the core surface.