Multiwall carbon nanotube opto-electronic devices
    4.
    发明授权
    Multiwall carbon nanotube opto-electronic devices 有权
    多壁碳纳米管光电器件

    公开(公告)号:US09166172B2

    公开(公告)日:2015-10-20

    申请号:US13878912

    申请日:2011-10-11

    摘要: A high-sensitivity detector for opto-electronic detection using multiwall carbon nanotubes (MWCNTs) is provided. More specifically, multiwall carbon nanotube films demonstrate an infrared bolometric photoresponse higher than SWCNT films at room temperature. The observed D* exceeding 3.3×106 cm Hz1/2/W with MWCNT-film bolometers and can be further improved to over 1×107 cm Hz1/2/W by adding graphene flakes. The response time of about 1-2 milliseconds with MWCNT bolometers is more than an order of magnitude shorter than that of SWCNT bolometers. For individual MWCNTs with specially designed asymmetric Schottky contacts, one on the sidewall and the other covering the end, the photocurrent has been efficiently harvested and provides a higher detectivity of 6.2×109 cm·Hz1/2/W at room temperature, which is one order of magnitude higher than the convectional VOx detector and makes MWCNT competitive for practical optoelectronic detections over infrared and even longer wavelength range.

    摘要翻译: 提供了一种使用多壁碳纳米管(MWCNT)进行光电检测的高灵敏度检测器。 更具体地说,多壁碳纳米管膜在室温下表现出高于SWCNT膜的红外辐射光响应。 观察到的D *超过3.3×106 cm Hz1 / 2 / W,MWCNT薄膜测辐射热量计可以通过添加石墨烯薄片进一步提高到超过1×107 cm Hz1 / 2 / W。 MWCNT辐射热测量仪的响应时间大约1-2毫秒比SWCNT辐射热测量仪短一个数量级。 对于具有特殊设计的不对称肖特基接触的单个MWCNT,侧壁上的一个覆盖端部,光电流已经被有效地收获,并且在室温下提供了更高的6.2×109cm·Hz1 / 2 / W的检测率,这是一个 使得MWCNT在红外和甚至更长的波长范围内具有竞争力的实际光电检测。

    Multiwall Carbon Nanotube Opto-Electronic Devices
    5.
    发明申请
    Multiwall Carbon Nanotube Opto-Electronic Devices 有权
    多壁碳纳米管光电子器件

    公开(公告)号:US20130264542A1

    公开(公告)日:2013-10-10

    申请号:US13878912

    申请日:2011-10-11

    IPC分类号: H01L51/00

    摘要: A high-sensitivity detector for opto-electronic detection using multiwall carbon nanotubes (MWCNTs) is provided. More specifically, multiwall carbon nanotube films demonstrate an infrared bolometric photoresponse higher than SWCNT films at room temperature. The observed D* exceeding 3.3×106 cm Hz1/2/W with MWCNT-film bolometers and can be further improved to over 1×107 cm Hz1/2/W by adding graphene flakes. The response time of about 1-2 milliseconds with MWCNT bolometers is more than an order of magnitude shorter than that of SWCNT bolometers. For individual MWCNTs with specially designed asymmetric Schottky contacts, one on the sidewall and the other covering the end, the photocurrent has been efficiently harvested and provides a higher detectivity of 6.2×109 cm·Hz1/2/W at room temperature, which is one order of magnitude higher than the convectional VOx detector and makes MWCNT competitive for practical optoelectronic detections over infrared and even longer wavelength range.

    摘要翻译: 提供了一种使用多壁碳纳米管(MWCNT)进行光电检测的高灵敏度检测器。 更具体地说,多壁碳纳米管膜在室温下表现出高于SWCNT膜的红外辐射光响应。 观察到的D *超过3.3×106 cm Hz1 / 2 / W,MWCNT薄膜测辐射热量计可以通过添加石墨烯薄片进一步提高到超过1×107 cm Hz1 / 2 / W。 MWCNT辐射热测量仪的响应时间大约1-2毫秒比SWCNT辐射热测量仪短一个数量级。 对于具有特殊设计的不对称肖特基接触的单个MWCNT,侧壁上的一个覆盖端部,光电流已经被有效地收获,并且在室温下提供了更高的6.2×109cm·Hz1 / 2 / W的检测率,这是一个 使得MWCNT在红外和甚至更长的波长范围内具有竞争力的实际光电检测。