公开(公告)号：US20110284073A1

公开(公告)日：2011-11-24

申请号：US13196334

申请日：2011-08-02

申请人： Supratik Guha ,  Oki Gunawan

发明人： Supratik Guha ,  Oki Gunawan

IPC分类号： H01L31/0224

CPC分类号： H01L31/022433 ,  Y02E10/50

摘要： A photovoltaic cell and a method of forming an electrode grid on a photovoltaic semiconductor substrate of a photovoltaic cell are disclosed. In one embodiment, the photovoltaic cell comprises a photovoltaic semiconductor substrate; a back electrode electrically connected to a back surface of the substrate; and a front electrode electrically connected to a front surface of the substrate. The substrate, back electrode, and front electrode form an electric circuit for generating an electric current when said substrate absorbs light. The front electrode is comprised of a metal grid defining a multitude of holes. These holes may be periodic, aperiodic, or partially periodic. The front electrode may be formed by depositing nanospheres on the substrate; forming a metallic layer on the substrate, around the nanospheres; and removing the nanospheres, leaving an electrode grid defining a multitude of holes on the substrate.

摘要翻译： 公开了一种光伏电池和在光伏电池的光电半导体衬底上形成电极栅格的方法。 在一个实施例中，光伏电池包括光电半导体衬底; 电连接到所述基板的背面的背面电极; 以及电连接到所述基板的前表面的前电极。 当基板吸收光时，基板，背面电极和正面电极形成用于产生电流的电路。 前电极由限定多个孔的金属网格组成。 这些孔可以是周期性的，非周期性的或部分周期性的。 前电极可以通过在衬底上沉积纳米球而形成; 在纳米球周围在基底上形成金属层; 并去除纳米球，留下在基底上限定多个孔的电极网格。

公开(公告)号：US20090217972A1

公开(公告)日：2009-09-03

申请号：US12039953

申请日：2008-02-29

申请人： Supratik Guha ,  Oki Gunawan

发明人： Supratik Guha ,  Oki Gunawan

IPC分类号： H01L31/072 ,  H01L31/0256 ,  H01L31/18

CPC分类号： H01L31/07 ,  H01L31/022425 ,  H01L31/02327 ,  H01L31/0256 ,  H01L31/03529 ,  H01L31/18 ,  Y02E10/50

摘要： Photovoltaic devices and techniques for enhancing efficiency thereof are provided. In one aspect, a photovoltaic device is provided. The photovoltaic device comprises a photocell having a photoactive layer and a non-photoactive layer adjacent to the photoactive layer so as to form a heterojunction between the photoactive layer and the non-photoactive layer; and a plurality of high-aspect-ratio nanostructures on one or more surfaces of the photoactive layer. The plurality of high-aspect-ratio nanostructures are configured to act as a scattering media for incident light. The plurality of high-aspect-ratio nanostructures can also be configured to create an optical resonance effect in the incident light.

摘要翻译： 提供了用于提高效率的光伏器件和技术。 一方面，提供一种光电器件。 光电器件包括具有光活性层和与光活性层相邻的非光活性层的光电池，以便在光敏层和非光活性层之间形成异质结; 以及在光活性层的一个或多个表面上的多个高纵横比纳米结构。 多个高纵横比纳米结构被配置为用作入射光的散射介质。 多个高纵横比纳米结构也可以被配置为在入射光中产生光学共振效应。