SEG tech generates electricity using shadows and light

行业动态 2024-09-22 06:42:33 1

When it comes to regular photovoltaic panels, the fewer shadows that are cast upon them, the better. An experimental new device, however, actually generates electricity via the contrast between shadows and light on its surface.

Developed by scientists at the National University of Singapore, the tool is what's known as a shadow-effect energy generator (SEG). The current prototype is made up of a flexible transparent plastic base along with four cells, each one of which consists of a thin gold film deposited onto a silicon wafer. These cells are cheaper to produce than comparable silicon solar cells.

When the whole SEG is placed either entirely in the light or in a shadow, it generates little if any electricity. However, when partof it is exposed to light and part of it is shadowed, a voltage difference occurs between the lit and unlit sections. This difference in turn produces a significant electrical current.

In lab tests conducted under partly-shadowed indoor lighting, the SEG was able to power small devices such as a digital watch. It performed best when half in light and half in shadow, as this arrangement provided equal areas for charge generation and storage, respectively. In fact, it was twice as efficient as a similar-capacity photovoltaic panel in the same conditions.

Along with being able to power small gadgets under less-than-optimal lighting, SEGs could also serve as motion sensors – when a moving object casts a shadow across one of the devices, it causes a detectable electrical current to be generated.

The scientists are now looking into replacing the gold with a cheaper material, in order to further reduce the cost of the technology.

A paper on the research, which is being led by Asst. Prof. Tan Swee Ching and Prof. Andrew Wee, was recently published in the journal Energy & Environmental Science.

Source: National University of Singapore

本文地址:http://o.zzzogryeb.bond/html/31a799278.html
版权声明

本文仅代表作者观点,不代表本站立场。
本文系作者授权发表,未经许可,不得转载。

全站热门

Black Friday GPU Buying Guide: November GPU Pricing Update

These football fans made the cutest gesture for kids visiting from the hospital

North Korean paper calls for speedy harvests to minimize loss from natural disasters

交通管制 摩的“例外”?

Coach jailed for sexual exploitation of underage athlete

Google just launched a GIF maker to make your data look better

Medical dispute support for foreign patients neglected

North Korean paper calls for Japan to make reparations for colonial

友情链接