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</div> </td> <td valign="top" class="album_side_r"> <div class="album_side"> <div class="hm mtn mbn"> <a href="http://club.oecr.com/space-uid-54876.html" target="_blank" class="xi2"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></a> <span class="tit_author"> <a href="http://club.oecr.com/space-uid-54876.html">update</a> </span> </div> <div class="date"><span>发布时间:</span> 2011-9-14 15:48</div> <div class="album_info"> <h3>正文摘要: </h3> <p> 激子扩散试验的水晶面和位置。A：bc面微米薄的水晶，具有不同的扩散方向。PL模式显示的是在薄水晶中以及水晶下面的激子扩散效应。B：清洁bc面。C：b轴不平行于表面的水晶面，产生不对称的PL模式。来源：利哈伊 ...</p> </div> </div> </td> </tr> </table> </div> </div> <div class="bm vw pl" id="comment"> <div class="bm_h cl"> <h2>回复</h2> </div> <div class="bm_c"> <div id="postlistreply" class="xld xlda mbm"><div id="post_new" class="viewthread_table" style="display: none"></div></div><div id="post_928613" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-127272.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=127272&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-127272.html" target="_blank" class="xi2">微博评论</a><em id="author_928613"> 发表于</em> <span class="xg1 xw0">2011-9-14 16:17:41</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_928613"> 200000个20_-00元[吐] [挑逗]<br /> <br /> <img id="aimg_dPJ9Q" onclick="zoom(this, this.src, 0, 0, 0)" class="zoom" file="http://bbs.oecr.com/xwb/images/bgimg/icon_logo.png" onmouseover="img_onmouseoverfunc(this)" lazyloadthumb="1" border="0" alt="" /> <font size="2"><font color="gray"><a href="http://ome.ac.cn/index.php?m=ta&id=2190180052" target="_blank">来自 书家仪 的新浪微博</a></font></font></td></tr></table> </div> <div id="comment_928613" class="cm"> </div> <div id="post_rate_div_928613"></div> </div> </dd> </dl> <script type="text/javascript" reload="1"> aimgcount[928613] = ['dPJ9Q']; attachimggroup(928613); </script> </div> <div id="post_928591" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-54876.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-54876.html" target="_blank" class="xi2">update</a><em id="author_928591"> 发表于</em> <span class="xg1 xw0">2011-9-14 15:48:29</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_928591"> 对于塑料太阳能电池技术而言，理解激子扩散是关键的，在其中，光的吸收产生激子，而不是直接诱发电流，就像在最常用的硅系统中那样。<br /> <br /> 激子在塑料太阳能电池中产生以后，会朝着专门设计的界面扩散，在那里，它们会激发电子进入外部电路，形成电子的流动，就是我们所说的电流。这个扩散过程是限制塑料太阳能电池效率的技术挑战之一。<br /> <br /> 比阿基奥说：“这是第一次，分子材料中的激子在室温下被直接观察到，我们相信，我们已经证明的技术其他研究人员将会利用，以更好地理解激子扩散以及它在塑料太阳能电池中形成的瓶颈。”<br /> <br /> 我们什么时候会有廉价高效的塑料太阳能电池？世界各地研究人员的目标就是提高激子扩散长度，直到它们变得和光的吸收一样长，就是在这一点，阳光可以最有效地收集，并转化为能量。<br /> <br /> 尔克昕和比阿基奥的文章发表在杂志《物理评论快报》（Physical Review Letters）上。<br /> <br /> 这项研究受到利哈伊大学的学院创新基金（Faculty Innovation Grant）的支持，这个基金提供资源，开发新思路，演示研究重要问题的新方法。<br /> <br /> 得益于扩散激子的直接成像，尔克昕和比阿基奥能够精确测量它们的扩散长度。他们发现，这个长度在某一特定方向非常高，达到的数值，比在目前使用的塑料太阳能电池中高数百倍。这是第一次，在分子材料中直接观察室温下的激子，而且都认为，广泛采用尔克昕和比阿基奥开发的技术，将带来该领域的重大进展。<br /> <br /> 比阿基奥说：“重要的是，物理学家探索了这一机制背后最根本的现象，使太阳能的收集可以采用廉价的有机材料。有机物有大量未开发的潜力，我们在红荧烯中观察到的非常有效的激子扩散，可能为新的思路和技术奠定基础，以开发比以前更有效的塑料太阳能电池。”</td></tr></table> </div> <div id="comment_928591" class="cm"> </div> <div id="post_rate_div_928591"></div> </div> </dd> </dl> </div> </div> </div> </div> <script type="text/javascript"> new lazyload(); </script> <div class="wp mtn"> <!--[diy=diy3]--><div id="diy3" class="area"></div><!--[/diy]--> </div></div> </div> <!--autocomment filter by maxnum--> <div class="ft_wp"> <div id="ft" class=" cl"> <div id="flk" > <p> <a href="http://wpa.qq.com/msgrd?V=3&Uin=20600600&Site=光电工程师社区&Menu=yes&from=discuz" target="_blank" title="QQ"><img 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