CN100356148C - Infrared laser power detector based on disordered multi-wall nano carbon tube - Google Patents

Infrared laser power detector based on disordered multi-wall nano carbon tube Download PDF

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Publication number
CN100356148C
CN100356148C CNB200510011172XA CN200510011172A CN100356148C CN 100356148 C CN100356148 C CN 100356148C CN B200510011172X A CNB200510011172X A CN B200510011172XA CN 200510011172 A CN200510011172 A CN 200510011172A CN 100356148 C CN100356148 C CN 100356148C
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China
Prior art keywords
laser power
infrared laser
power detector
intensity
infrared
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CNB200510011172XA
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CN1632476A (en
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刘晓萌
孙家林
朱嘉麟
李俊林
吴念乐
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Tsinghua University
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Tsinghua University
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Abstract

The present invention relates to an infrared laser power detector on the basis of a disorder multi-wall carbon nanometer tube. The detector comprises a sheet pressed by the powder of the multi-walled carbon nanometer tube and a metal base sheet, namely, one surface of the sheet of the multi-wall carbon nanometer tube is tightly contacted with the metal base sheet, and the other surface is coated with a metal conductive film. On the job, the metal conductive film and the metal base sheet are respectively connected with a conducting wire and a measuring instrument of an external circuit; then, infrared lasers to be measured are irradiated to the surface of the metal conductive film; therefore, photo current with different intensity is generated in a circuit with the variation of the intensity of the irradiated light; when the intensity of the irradiated light is increased, the current is increased; when the intensity of the irradiated light is reduced, the current is reduced. Compared with the prior art, the present invention has the advantages of simple structure, convenient manufacture, high photoelectric response speed, sensitivity to light in an infrared band and second scale detector response time. The device has wide application perspectives in the field of measuring the infrared laser power.

Description

Infrared laser power detector based on disordered multi-wall nano carbon tube
Technical field
The present invention relates to a kind of optoelectronics device, particularly a kind of infrared laser power detector that utilizes carbon nano-tube to make.
Background technology
Existing infrared detection technique data shows, the infrared laser power detector element mainly adopts has the semiconductor material of certain photoelectric response characteristic, the laminate material that routinizes and special polymer composite etc. to make to infrared light, and its structure and principle also are varied.Carbon nano-tube has been paid close attention to by people since it is born always, is penetrated into scientific research and various fields in life as setting a prairie fire; The mature technology of synthetic preparation carbon nano-tube also has report more.Document [Zhang XF, Cao AY, Wei BQ for example, LiYH, Wei JQ, Xu CL, and Wu DH, CHEMTCAL PHYSICS LETTERS 2002,362:285-290], [CiLJ, Wei JQ, Wei BQ, Liang J, Xu CL, and Wu DH, CARBON 2001,39 (3): 329-335], [WeiJQ, Ci LJ, Jiang B, Li YH, Zhang XF, Zhu HW, Xu CL, and Wu DH, JOURNAL OF MATERIALSCHEMISTRY 2003,13 (6): 1340-1344], [Yu Hao, Zhang Qunfeng, Wei Fei, Qian Weizhong, Luo Guohua, Carbon 41 (2003) 2855-2863] and [Chinese invention patent, publication number: 1456498] in relevant report is all arranged.Documents and materials show that carbon nano-tube has special level structure and excellent electrical properties, and still, it is simpler how to utilize nano material to develop a kind of structure, and easy to make and infrared laser power detector that photoelectric response is fast is present good problem to study.
Summary of the invention
The objective of the invention is to make full use of special level structure and excellent electrical properties that nano material has, develops and a kind ofly have simple in structurely, easy to make, and infrared band light had the responsive infrared laser power detector that responds.
Technical scheme of the present invention is as follows:
A kind of infrared laser power detector based on disordered multi-wall nano carbon tube, it is characterized in that: comprise the thin slice that a slice is pressed into by the multi-wall carbon nano-tube pipe powder, the metal substrate that is arranged on thin slice one side and closely contacts with thin slice and be arranged on the conductive metal film of thin slice opposite side, and on conductive metal film and metal substrate extraction electrode.
The invention provides a kind of laser power detector of making based on the disordered multi-wall nano carbon tube powder, simple in structure with respect to prior art, easy to make, and also photoelectric response speed is fast, and very responsive to infrared band light, its detector response time is a second-time.This device has broad application prospects in the infrared laser power fields of measurement.
Description of drawings
Fig. 1 is the scanning electron microscope image of the used multi-walled carbon nano-tubes of the present invention.
Fig. 2 is the longitudinal diagram of multi-walled carbon nano-tubes thin slice in the embodiment of the invention.
Fig. 3 is the structural representation of laser power detector embodiment provided by the invention.Wherein 1 is metal substrate, and 2 is the thin slice of multi-walled carbon nano-tubes powder compacting, and 3 is the elargol film, the incident direction of 4 expression laser beams.
Fig. 4 is the power measurement curve of the infrared laser of 780nm to wavelength for laser power detector provided by the invention.
Fig. 5 is the power measurement curve of the infrared laser of 1064nm to wavelength for laser power detector provided by the invention.
Fig. 6 is the power measurement curve of the infrared laser of 10.6 μ m to wavelength for laser power detector provided by the invention.
Fig. 7 is the time response curve of laser power detector provided by the invention when laser power is measured.
Embodiment
Fig. 3 is the structural representation of laser power detector of the present invention, it comprises the thin slice 2 that a slice is pressed into by the multi-wall carbon nano-tube pipe powder, metal substrate 1 that is arranged on thin slice one side and closely contacts with thin slice and conductive metal film or the metallic conduction glued membrane 3 that is arranged on the thin slice opposite side, and on conductive metal film and metal substrate extraction electrode.The multi-wall carbon nano-tube pipe powder that the present invention adopts can be the multi-walled carbon nano-tubes with any method preparation; Thin slice can adopt circle, square or other shape; Conductive metal film can adopt conducting metals such as gold, silver, copper, aluminium to make, or adopts the conductive adhesive film that contains described metal.Method for making is that the multi-wall carbon nano-tube pipe powder is pressed into thin slice, and the side with the multi-walled carbon nano-tubes thin slice closely contacts with metal substrate 1 then, and opposite side is coated with conductive metal film or even plating conductive adhesive film 3.During work, earlier conductive metal film or metallic conduction glued membrane 3 are connected with the external circuit measurement instrument with lead respectively with metal substrate, then tested infrared laser are incided on conductive metal film or the metallic conduction glued membrane 3.Result of study confirms, when infrared laser radiation during in this zone, can produce photic electric current in the loop, and the size of this electric current and laser intensity are linear in very big regional extent.Promptly when laser intensity increased, the electric current of generation also increased; Otherwise when laser intensity reduced, the electric current of generation also reduced, thereby, can reach the purpose of detection laser watt level by the size that measuring light is sent a telegraph stream.Like this, just, constituted above-mentioned infrared laser power detector.
The invention will be further described to enumerate a specific embodiment below.
The present invention adopts the stratiform thin rounded flakes (sectional side view as shown in Figure 2) of multi-wall carbon nano-tube pipe powder (micromechanism as shown in Figure 1) compacting, the one side coating elargol film of disk, another side closely contacts with copper base, constitutes disordered multi-wall nano carbon tube infrared laser power detector (as shown in Figure 3).Infrared laser 4 with 780nm, 1064nm and 10.6 μ m is radiated on the elargol film respectively, all can produce stronger photic electric current (respectively as Fig. 4, Fig. 5, shown in Figure 6).The highest experiment measuring power of this power detector is 10W (as shown in Figure 6).From the time response curve (as shown in Figure 7) of this power detector during to laser radiation as can be known, the measurement response time of this power detector was less than 3 seconds.

Claims (1)

1. infrared laser power detector based on disordered multi-wall nano carbon tube, it is characterized in that: comprise the thin slice (2) that a slice is pressed into by the disordered multi-wall nano carbon tube powder, metal substrate (1) that is arranged on thin slice one side and closely contacts and the conductive metal film (3) that is arranged on the thin slice opposite side with thin slice, and on conductive metal film and metal substrate extraction electrode.
CNB200510011172XA 2005-01-14 2005-01-14 Infrared laser power detector based on disordered multi-wall nano carbon tube Expired - Fee Related CN100356148C (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101314464B (en) * 2007-06-01 2012-03-14 北京富纳特创新科技有限公司 Process for producing carbon nano-tube film
FR2933968B1 (en) * 2008-07-18 2010-09-10 Thales Sa ELECTRONIC DEVICE COMPRISING ELECTRONIC COMPONENTS AND AT LEAST ONE NANOTUBE INTERFACE AND METHOD OF MANUFACTURE
CN101871818B (en) * 2010-06-25 2012-05-23 清华大学 Infrared detector
CN103487141B (en) * 2012-06-12 2015-07-29 清华大学 The detection system of light distribution
CN111380614A (en) * 2018-12-29 2020-07-07 清华大学 Infrared detector and infrared imager

Citations (3)

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Publication number Priority date Publication date Assignee Title
US6400088B1 (en) * 2000-11-15 2002-06-04 Trw Inc. Infrared carbon nanotube detector
JP2003227808A (en) * 2002-02-05 2003-08-15 Koyo Seiko Co Ltd Sensor using carbon nano tube
JP2004152787A (en) * 2002-10-28 2004-05-27 Sharp Corp Semiconductor element and its manufacturing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6400088B1 (en) * 2000-11-15 2002-06-04 Trw Inc. Infrared carbon nanotube detector
JP2003227808A (en) * 2002-02-05 2003-08-15 Koyo Seiko Co Ltd Sensor using carbon nano tube
JP2004152787A (en) * 2002-10-28 2004-05-27 Sharp Corp Semiconductor element and its manufacturing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Photoconductivity of single-wall carbon nanotubes under continuous-wave near-infrared illumination. I. A. Levitsky,W. B. Euler.APPLIED PHYSICS LETTERS,Vol.85 No.9. 2003 *

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