The effect of secondary electrons on emission
Identifieur interne : 000080 ( Chine/Analysis ); précédent : 000079; suivant : 000081The effect of secondary electrons on emission
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Abstract
The effect of secondary electrons on emission is studied by modelling the electrons behaviours in multi-layers, including electron injection, transportation, multiplication, and emission. The dielectric constant model and carrier mobility model are presented to describe the voltage distribution in multi-layers for the non-current injection and current injection respectively. After injection, the electrons are accelerated in SiO2, where they collide with the electrons, generating secondary electrons, consequently contributing to emission. A multiplying factor M is introduced to describe the secondary electrons multiplication in certain electrical field strength. The prediction was further proved by comparing two groups of devices with and without the accelerating layer: ITO/MEH-PPV/SiO2/Al and ITO/MEH-PPV/BCP/Al. The current avalanche observed in current-illumination experiment is a proof of the existence and contribution of secondary electrons.
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<author><name>YUAN LI</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Optoelectronics Technology, Beijing Jiaotong University</s1>
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<author><name>SULING ZHAO</name>
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<author><name>ZHENG XU</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Optoelectronics Technology, Beijing Jiaotong University</s1>
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<author><name>FUJUN ZHANG</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Optoelectronics Technology, Beijing Jiaotong University</s1>
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<author><name>DEWEI ZHAO</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue</s1>
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<author><name>JINGLU SONG</name>
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<author><name>JINZHAO HUANG</name>
<affiliation wicri:level="1"><inist:fA14 i1="04"><s1>School of Physics, University of Jinan</s1>
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<country>République populaire de Chine</country>
<wicri:noRegion>Jinan 250022, Shandong Province</wicri:noRegion>
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<author><name>GUANG YAN</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Optoelectronics Technology, Beijing Jiaotong University</s1>
<s2>Beijing 100044</s2>
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<placeName><settlement type="city">Pékin</settlement>
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<author><name>CHAO KONG</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Optoelectronics Technology, Beijing Jiaotong University</s1>
<s2>Beijing 100044</s2>
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<author><name>XURONG XU</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Optoelectronics Technology, Beijing Jiaotong University</s1>
<s2>Beijing 100044</s2>
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<publicationStmt><idno type="inist">13-0250395</idno>
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<seriesStmt><idno type="ISSN">0022-2313</idno>
<title level="j" type="abbreviated">J. lumin.</title>
<title level="j" type="main">Journal of luminescence</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Avalanche</term>
<term>Carrier mobility</term>
<term>Cathodoluminescence</term>
<term>Electric field effects</term>
<term>Electron emission</term>
<term>Electron injection</term>
<term>Illumination</term>
<term>Indium oxide</term>
<term>Modelling</term>
<term>Multilayers</term>
<term>Permittivity</term>
<term>Secondary electron</term>
<term>Silicon oxides</term>
<term>Solid state</term>
<term>Tin oxide</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Electron secondaire</term>
<term>Emission électronique</term>
<term>Modélisation</term>
<term>Injection électron</term>
<term>Constante diélectrique</term>
<term>Mobilité porteur charge</term>
<term>Multicouche</term>
<term>Oxyde de silicium</term>
<term>Effet champ électrique</term>
<term>Oxyde d'étain</term>
<term>Oxyde d'indium</term>
<term>Avalanche</term>
<term>Eclairement</term>
<term>Etat solide</term>
<term>Cathodoluminescence</term>
<term>SiO2</term>
</keywords>
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<front><div type="abstract" xml:lang="en">The effect of secondary electrons on emission is studied by modelling the electrons behaviours in multi-layers, including electron injection, transportation, multiplication, and emission. The dielectric constant model and carrier mobility model are presented to describe the voltage distribution in multi-layers for the non-current injection and current injection respectively. After injection, the electrons are accelerated in SiO<sub>2</sub>
, where they collide with the electrons, generating secondary electrons, consequently contributing to emission. A multiplying factor M is introduced to describe the secondary electrons multiplication in certain electrical field strength. The prediction was further proved by comparing two groups of devices with and without the accelerating layer: ITO/MEH-PPV/SiO<sub>2</sub>
/Al and ITO/MEH-PPV/BCP/Al. The current avalanche observed in current-illumination experiment is a proof of the existence and contribution of secondary electrons.</div>
</front>
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<fA03 i2="1"><s0>J. lumin.</s0>
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<fA05><s2>138</s2>
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<fA08 i1="01" i2="1" l="ENG"><s1>The effect of secondary electrons on emission</s1>
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<fA11 i1="01" i2="1"><s1>YUAN LI</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>SULING ZHAO</s1>
</fA11>
<fA11 i1="03" i2="1"><s1>ZHENG XU</s1>
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<fA11 i1="04" i2="1"><s1>FUJUN ZHANG</s1>
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<fA11 i1="05" i2="1"><s1>DEWEI ZHAO</s1>
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<fA11 i1="06" i2="1"><s1>JINGLU SONG</s1>
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<fA11 i1="07" i2="1"><s1>JINZHAO HUANG</s1>
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<fA11 i1="08" i2="1"><s1>GUANG YAN</s1>
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<fA11 i1="09" i2="1"><s1>CHAO KONG</s1>
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<fA11 i1="10" i2="1"><s1>XURONG XU</s1>
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<fA14 i1="01"><s1>Institute of Optoelectronics Technology, Beijing Jiaotong University</s1>
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<sZ>2 aut.</sZ>
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<sZ>8 aut.</sZ>
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<fA14 i1="03"><s1>Department of Materials Science & Engineering, University of Florida</s1>
<s2>FL 32611</s2>
<s3>USA</s3>
<sZ>6 aut.</sZ>
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<fA14 i1="04"><s1>School of Physics, University of Jinan</s1>
<s2>Jinan 250022, Shandong Province</s2>
<s3>CHN</s3>
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<fA20><s1>89-93</s1>
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<fC01 i1="01" l="ENG"><s0>The effect of secondary electrons on emission is studied by modelling the electrons behaviours in multi-layers, including electron injection, transportation, multiplication, and emission. The dielectric constant model and carrier mobility model are presented to describe the voltage distribution in multi-layers for the non-current injection and current injection respectively. After injection, the electrons are accelerated in SiO<sub>2</sub>
, where they collide with the electrons, generating secondary electrons, consequently contributing to emission. A multiplying factor M is introduced to describe the secondary electrons multiplication in certain electrical field strength. The prediction was further proved by comparing two groups of devices with and without the accelerating layer: ITO/MEH-PPV/SiO<sub>2</sub>
/Al and ITO/MEH-PPV/BCP/Al. The current avalanche observed in current-illumination experiment is a proof of the existence and contribution of secondary electrons.</s0>
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<s5>41</s5>
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<s5>42</s5>
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<s5>43</s5>
</fC03>
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<s5>44</s5>
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<s5>44</s5>
</fC03>
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<s5>44</s5>
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<s5>45</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Permittivity</s0>
<s5>45</s5>
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<s5>46</s5>
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<s5>46</s5>
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<s2>NK</s2>
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<s5>63</s5>
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<s5>63</s5>
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<s5>64</s5>
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<s5>64</s5>
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<s5>66</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Avalancha</s0>
<s5>66</s5>
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<s5>67</s5>
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</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Etat solide</s0>
<s5>68</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Solid state</s0>
<s5>68</s5>
</fC03>
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<s5>68</s5>
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<fC03 i1="15" i2="3" l="FRE"><s0>Cathodoluminescence</s0>
<s5>69</s5>
</fC03>
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<s5>69</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE"><s0>SiO2</s0>
<s4>INC</s4>
<s5>83</s5>
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</fN21>
<fN44 i1="01"><s1>OTO</s1>
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<fN82><s1>OTO</s1>
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