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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">上海光机所在二维PdSe2的宽带非线性光学响应和光载流子动力学研究方面取得进展 </h1> <p class="xg1"> 时间：2021-11-10 10:06<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1014)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=9343&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 上海光机所</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>近期，中国科学院上海光学精密机械研究所微纳光电子功能材料实验室在二维PdSe2的宽带非线性光学响应和光载流子动力学研究方面取得进展，相关研究成果发表于《先进光学材料》(Advanced Optical Materials)。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 近期，中国科学院上海光学精密<a href="http://machine.oecr.com" target="_blank" class="relatedlink">机械</a>研究所微纳光<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>功能<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>实验室在二维PdSe2的宽带非线性光学响应和光载流子动力学研究方面取得进展，相关研究成果发表于《先进光学材料》(Advanced Optical Materials)。</div><div><br></div><div> PdSe2的带隙能够通过控制层数变化来实现0-1.3 eV范围内的连续可调，因此被认为是连接零带隙石墨烯和大带隙MoS2之间的桥梁，具有光电器件应用方面的潜力。研究小组利用非线性光学和超快载流子动力学技术系统地研究了三层PdSe2<a href="http://opticalfilm.oecr.com" target="_blank" class="relatedlink">薄膜</a>的稳态和瞬态光响应。三层PdSe2在紫外、可见和近红外区域表现出宽带非线性吸收行为。特别是，PdSe2在346 nm和520 nm处具有良好的可饱和吸收性质，表明其可以作为短波长<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>的可饱和吸收体。并且基于其高调制深度特性，研究小组提出了一种基于PdSe2的全光阈值器，可用于提高信号的信噪比。此外，研究小组利用泵浦探测技术和瞬态吸收光谱，获取了PdSe2在光激发下产生的光生载流子的复合寿命，并揭示了其复合机制为浅缺陷辅助的俄歇复合过程和深缺陷辅助的缺陷态饱和过程。</div><div><br></div><div> 这项工作证实了PdSe2具有宽带光学响应、较高调制深度和较快响应速度，表明了PdSe2材料在宽带<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a>光电子器件方面的应用前景。</div><div><br></div><div> 相关工作得到了国家自然科学基金委、中国科学院先导B、及上海市科委的项目支持。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/202111/10/100557t2vtuffkzut8dvvz.png" target="_blank"><img src="data/attachment/portal/202111/10/100557t2vtuffkzut8dvvz.png"></a></p><p style="text-align: center;"><span style="color: rgb(51, 51, 51); font-family: 宋体; background-color: rgb(255, 255, 255);">图1 三层PdSe</span><sub style="box-sizing: border-box; color: rgb(51, 51, 51); font-family: 宋体; background-color: rgb(255, 255, 255);">2</sub><span style="color: rgb(51, 51, 51); font-family: 宋体; background-color: rgb(255, 255, 255);">的宽带非线性吸收和瞬态吸收光谱</span></p><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" style="overflow-wrap: normal; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;"><span style="overflow-wrap: normal;">免责声明：编写或转载此文是为了传递更多的信息，为光电行业尽一些绵薄之力。若文字或图片侵犯了您的合法权益或有不当之处，请作者在20个工作日之内与我们联系，我们将协调给予处理。</span></div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" style="overflow-wrap: normal; color: rgb(143, 143, 143); background-color: rgb(255, 255, 255); text-indent: 28px; font-family: 微软雅黑;"><br style="overflow-wrap: normal;"></div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" style="overflow-wrap: 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