考研英语阅读篇章太阳能利用获新提升
<p> 篇章：太阳能利用获新提升</p><p> <span word="A">A</span> <span word="perspective">perspective</span> <span word="article">article</span> <span word="published">published</span> <span word="last">last</span> <span word="month">month</span> <span word="by">by</span> <span word="University">University</span> <span word="of">of</span> <span word="California">California</span>, <span word="Riverside">Riverside</span> <span word="chemists">chemists</span> <span word="in">in</span> <span word="the">the</span> <span word="Journal">Journal</span> <span word="of">of</span> <span word="Physical">Physical</span> <span word="Chemistry">Chemistry</span> <span word="Letters">Letters</span> <span word="was">was</span> <span word="selected">selected</span> <span word="as">as</span> <span word="an">an</span> <span word="Editors">Editors</span> <span word="Choice">Choice</span> -- <span word="an">an</span> <span word="honor">honor</span> <span word="only">only</span> <span word="a">a</span> <span word="handful">handful</span> <span word="of">of</span> <span word="research">research</span> <span word="papers">papers</span> <span word="receive">receive</span>. <span word="The">The</span> <span word="perspective">perspective</span> <span word="reviews">reviews</span> <span word="the">the</span> <span word="chemists">chemists</span> <span word="work">work</span> <span word="on">on</span> <span word="singlet">singlet</span> <span word="fission">fission</span>, <span word="a">a</span> <span word="process">process</span> <span word="in">in</span> <span word="which">which</span> <span word="a">a</span> <span word="single">single</span> <span word="photon">photon</span> <span word="generates">generates</span> <span word="a">a</span> <span word="pair">pair</span> <span word="of">of</span> <span word="excited">excited</span> <span word="states">states</span>. <span word="This">This</span> 1- 2 <span word="conversion">conversion</span> <span word="process">process</span>, <span word="as">as</span> <span word="it">it</span> <span word="is">is</span> <span word="known">known</span>, <span word="has">has</span> <span word="the">the</span> <span word="potential">potential</span> <span word="to">to</span> <span word="boost">boost</span> <span word="solar">solar</span> <span word="cell">cell</span> <span word="efficiency">efficiency</span> <span word="by">by</span> <span word="as">as</span> <span word="much">much</span> <span word="as">as</span> 30 <span word="percent">percent</span>. <span word="Applications">Applications</span> <span word="of">of</span> <span word="the">the</span> <span word="research">research</span> <span word="include">include</span> <span word="more">more</span> <span word="energy">energy</span>-<span word="efficient">efficient</span> <span word="lighting">lighting</span> <span word="and">and</span> <span word="photodetectors">photodetectors</span> <span word="with">with</span> 200 <span word="percent">percent</span> <span word="efficiency">efficiency</span> <span word="that">that</span> <span word="can">can</span> <span word="be">be</span> <span word="used">used</span> <span word="for">for</span> <span word="night">night</span> <span word="vision">vision</span>. <span word="Biology">Biology</span> <span word="may">may</span> <span word="use">use</span> <span word="singlet">singlet</span> <span word="fission">fission</span> <span word="to">to</span> <span word="deal">deal</span> <span word="with">with</span> <span word="high">high</span>-<span word="energy">energy</span> <span word="solar">solar</span> <span word="photons">photons</span> <span word="without">without</span> <span word="generating">generating</span> <span word="excess">excess</span> <span word="heat">heat</span>, <span word="as">as</span> <span word="a">a</span> <span word="protective">protective</span> <span word="mechanism">mechanism</span>.</p><p> <span word="Currently">Currently</span>, <span word="solar">solar</span> <span word="cells">cells</span> <span word="work">work</span> <span word="by">by</span> <span word="absorbing">absorbing</span> <span word="a">a</span> <span word="photon">photon</span>, <span word="which">which</span> <span word="generates">generates</span> <span word="an">an</span> <span word="exciton">exciton</span>, <span word="which">which</span> <span word="subsequently">subsequently</span> <span word="separates">separates</span> <span word="into">into</span> <span word="an">an</span> <span word="electron">electron</span>-<span word="hole">hole</span> <span word="pair">pair</span>. <span word="It">It</span> <span word="is">is</span> <span word="these">these</span> <span word="electrons">electrons</span> <span word="that">that</span> <span word="become">become</span> <span word="solar">solar</span> <span word="electricity">electricity</span>. <span word="The">The</span> <span word="efficiency">efficiency</span> <span word="of">of</span> <span word="these">these</span> <span word="solar">solar</span> <span word="cells">cells</span> <span word="is">is</span> <span word="limited">limited</span> <span word="to">to</span> <span word="about">about</span> 32 <span word="percent">percent</span>, <span word="however">however</span>, <span word="by">by</span> <span word="what">what</span> <span word="is">is</span> <span word="called">called</span> <span word="the">the</span> <span word="Shockley">Shockley</span>-<span word="Queisser">Queisser</span> <span word="Limit">Limit</span>. <span word="Future">Future</span> <span word="solar">solar</span> <span word="cells">cells</span>, <span word="also">also</span> <span word="known">known</span> <span word="as">as</span> <span word="Third">Third</span> <span word="Generation">Generation</span> <span word="solar">solar</span> <span word="cells">cells</span>, <span word="will">will</span> <span word="have">have</span> <span word="to">to</span> <span word="surpass">surpass</span> <span word="this">this</span> <span word="limit">limit</span> <span word="while">while</span> <span word="remaining">remaining</span> <span word="inexpensive">inexpensive</span>, <span word="requiring">requiring</span> <span word="the">the</span> <span word="use">use</span> <span word="of">of</span> <span word="new">new</span> <span word="physical">physical</span> <span word="processes">processes</span>. <span word="Singlet">Singlet</span> <span word="fission">fission</span> <span word="is">is</span> <span word="an">an</span> <span word="example">example</span> <span word="of">of</span> <span word="such">such</span> <span word="a">a</span> <span word="process">process</span>.</p><p> <span word="Our">Our</span> <span word="research">research</span> <span word="got">got</span> <span word="its">its</span> <span word="launch">launch</span> <span word="about">about</span> <span word="ten">ten</span> <span word="years">years</span> <span word="ago">ago</span> <span word="when">when</span> <span word="we">we</span> <span word="started">started</span> <span word="thinking">thinking</span> <span word="about">about</span> <span word="solar">solar</span> <span word="energy">energy</span> <span word="and">and</span> <span word="what">what</span> <span word="new">new</span> <span word="types">types</span> <span word="of">of</span> <span word="photophysics">photophysics</span> <span word="this">this</span> <span word="might">might</span> <span word="require">require</span>, <span word="said">said</span> <span word="Christopher">Christopher</span> <span word="Bardeen">Bardeen</span>, <span word="a">a</span> <span word="professor">professor</span> <span word="of">of</span> <span word="chemistry">chemistry</span>, <span word="whose">whose</span> <span word="lab">lab</span> <span word="led">led</span> <span word="the">the</span> <span word="research">research</span>. <span word="Global">Global</span> <span word="warming">warming</span> <span word="concerns">concerns</span> <span word="and">and</span> <span word="energy">energy</span> <span word="security">security</span> <span word="have">have</span> <span word="made">made</span> <span word="solar">solar</span> <span word="energy">energy</span> <span word="conversion">conversion</span> <span word="an">an</span> <span word="important">important</span> <span word="subject">subject</span> <span word="from">from</span> <span word="society">society</span> <span word="s">s</span> <span word="point">point</span>-<span word="of">of</span>-<span word="view">view</span>. <span word="More">More</span> <span word="efficient">efficient</span> <span word="solar">solar</span> <span word="cells">cells</span> <span word="would">would</span> <span word="lead">lead</span> <span word="to">to</span> <span word="wider">wider</span> <span word="use">use</span> <span word="of">of</span> <span word="this">this</span> <span word="clean">clean</span> <span word="energy">energy</span> <span word="source">source</span>.</p>
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