| 词条 | Polarizing organic photovoltaics |
| 释义 |
Background{{Main|Liquid crystal display}}A liquid crystal display (LCD) is a flat panel display, electronic visual display, video display that uses the light modulating properties of liquid crystals (LCs). LCs do not emit light directly. They are used in a wide range of applications, including computer monitors, television, instrument panels, laptops tablet computers etc.[4] They are common in consumer devices such as video players, gaming devices, clocks, watches, calculators, and telephones. OperationUp to three-fourths of the light energy wasted from LCD backlight illumination can be retrieved and utilized using polarizing organic photovoltaics. They can utilize external light energy also apart from backlight illumination using photovoltaic polarizers, which are present within the structure of the LCD screen.[5][6] Advantages80% to 90% of the total energy utilized by any device with an LCD screen is used up by the backlight illumination.[4] As polarizing organic photovoltaics can recycle up to 75% of wasted light energy, the efficiency of the device is increased.[2][7] DisadvantagesThis simply incorporates additional conversion efficiency losses. These devices harvest their own light. The article cited above, "Photovoltaics Could Charge A Phone Using Its Own Backlight" is bogus and makes claims that would violate the 1st and 2nd laws of thermodynamics if true. Such a device thus could not be patented and commercialized. See also: Perpetual Motion Machine See also{{Portal|Renewable energy|Energy}}
References1. ^{{cite journal|last1=Kumar|first1=Ankit|last2=Zhu|first2=Rui|last3=Yang|first3=Yang |date=9 August 2011 |title=Polarizing Organic Photovoltaics|journal=Advanced Materials|volume=23|issue=1|pages=4193–4198|doi=10.1002/adma.201101514|pmid=21826744}} 2. ^1 2 {{cite web|url=http://newsroom.ucla.edu/portal/ucla/ucla-engineers-invent-photovoltaic-210685.aspx|title=Phone losing charge? Technology created by UCLA engineers allows LCDs to recycle energy|last1=Chin|first1=Matthew|last2=Wong Kromhout|first2=Wileen|location=Los Angeles|publisher=University of California, Los Angeles|accessdate=2011-07-21|website=}} 3. ^{{cite web | url=http://www.engineer.ucla.edu/newsroom/featured-news/archive/2011/phone-losing-charge-technology-created-by-ucla-engineers-allows-lcds-to-recycle-energy | title=Phone losing charge? Technology created by UCLA engineers allows LCDs to recycle energy | publisher=engineer.ucla.edu | accessdate=August 10, 2011 | author=Matthew Chin | deadurl=yes | archiveurl=https://archive.is/20121210124830/http://www.engineer.ucla.edu/newsroom/featured-news/archive/2011/phone-losing-charge-technology-created-by-ucla-engineers-allows-lcds-to-recycle-energy | archivedate=December 10, 2012 | df= }} 4. ^1 {{cite web|url=http://www.rdmag.com/News/2011/08/Energy-Thin-Film-Solar-Photovoltaic-LCDs-let-phones-charge-themselves/|title=Photovoltaic LCDs let phones charge themselves|publisher=rdmag.com|accessdate=2011-07-21|website=}} 5. ^{{cite news|url=https://www.washingtonpost.com/business/technology/photovoltaic-cells-in-lcds-could-recycle-wasted-and-ambient-light/2011/08/15/gIQAUb16HJ_story.html|title=Photovoltaic Cells In LCDs Could Recycle Wasted And Ambient Light|publisher=The Washington Post|accessdate=2011-08-24|work=}} {{Dead link|date=September 2011|bot=RjwilmsiBot}} 6. ^{{cite web|url=http://scienceblog.com/47001/technology-lets-lcds-recycle-energy/|title=Technology lets LCDs recycle energy|publisher=scienceblog.com|accessdate=2011-07-21|website=}} 7. ^{{cite web|url=http://www.pcworld.com/article/237855/photovoltaics_could_charge_a_phone_using_its_own_backlight.html|title=Photovoltaics Could Charge a Phone Using its Own Backlight|publisher=PC World|accessdate=2011-08-24|website=|date=2011-08-11}} External links
2 : Photovoltaics|Solar cells |
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