The influence of indium tin oxide deposition on the transport properties at InP junctions
Identifieur interne : 000231 ( Main/Exploration ); précédent : 000230; suivant : 000232The influence of indium tin oxide deposition on the transport properties at InP junctions
Auteurs : RBID : ISTEX:11664_1993_Article_BF02818079.pdfEnglish descriptors
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Abstract
The influence of the deposition of indium tin oxide (ITO) on the electrical properties at n- and p-InP junctions have been investigated by current-voltage-temperature and capacitance-voltage measurements. It was found that the formation of the ITO layer on n-type InP substrates causes the reduction of the barrier height and subsequently forms an ohmic contact. The ITO layer on p-type substrates increases the barrier height by 200–300 meV, and causes a defect-assisted tunneling at low forward bias. The results, therefore, can be explained by the introduction of process induced donor-like defects, with the formation of a thin n+-layer in the near-surface, decreasing the barrier height for n-substrates and increasing the barrier height for p-substrates. These results support the buried n+/p-junction model for ITO/p-InP solar cell structures.
DOI: 10.1007/BF02818079
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<front><div type="abstract" xml:lang="eng">The influence of the deposition of indium tin oxide (ITO) on the electrical properties at n- and p-InP junctions have been investigated by current-voltage-temperature and capacitance-voltage measurements. It was found that the formation of the ITO layer on n-type InP substrates causes the reduction of the barrier height and subsequently forms an ohmic contact. The ITO layer on p-type substrates increases the barrier height by 200–300 meV, and causes a defect-assisted tunneling at low forward bias. The results, therefore, can be explained by the introduction of process induced donor-like defects, with the formation of a thin n+-layer in the near-surface, decreasing the barrier height for n-substrates and increasing the barrier height for p-substrates. These results support the buried n+/p-junction model for ITO/p-InP solar cell structures.</div>
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<abstract lang="eng">The influence of the deposition of indium tin oxide (ITO) on the electrical properties at n- and p-InP junctions have been investigated by current-voltage-temperature and capacitance-voltage measurements. It was found that the formation of the ITO layer on n-type InP substrates causes the reduction of the barrier height and subsequently forms an ohmic contact. The ITO layer on p-type substrates increases the barrier height by 200–300 meV, and causes a defect-assisted tunneling at low forward bias. The results, therefore, can be explained by the introduction of process induced donor-like defects, with the formation of a thin n+-layer in the near-surface, decreasing the barrier height for n-substrates and increasing the barrier height for p-substrates. These results support the buried n+/p-junction model for ITO/p-InP solar cell structures.</abstract>
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