首页> 外文会议>Symposium H, "Progress in semiconductor materials for optoelectronic applications" >The role of nitrogen-induced localization and defects in InGaAsP(≈2N): comparison of InGaAsN grown by molecular beam epitaxy and metal-organic chemical vapor deposition
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The role of nitrogen-induced localization and defects in InGaAsP(≈2N): comparison of InGaAsN grown by molecular beam epitaxy and metal-organic chemical vapor deposition

机译:氮诱导的定位和缺陷在IngaAsp中的作用(≈2%n):通过分子束外延和金属 - 有机化学气相沉积的InGaAsn的比较

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Nitrogen vibrational mode spectra, Hall mobilities, and minority carrier diffusion lengths are examined for InGaAsN ( ≈1.1 eV bandgap) grown by molecular beam epitaxy (MBE) and metal-organic chemical vapor deposition (MOCVD). Independent of growth technique, annealing promotes the formation of In-N bonding, and lateral carrier transport is limited by large scale (mean free path) material inhomogeneities. Comparing solar cell quantum efficiencies for devices grown by MBE and MOCVD, we find significant electron diffusion in the MBE material (reversed from the hole diffusion occurring in MOCVD material), and minority carrier diffusion in InGaAsN cannot be explained by a "universal", nitrogen-related defect.
机译:通过分子束外延(MBE)和金属 - 有机化学气相沉积(MOCVD)来检查氮振动模式光谱,霍尔迁移率和少数型载波扩散长度。独立于生长技术,退火促进了N-N键合的形成,并且横向载流量受大规模(平均自由路径)材料的限制。比较MBE和MOCVD种植的器件的太阳能电池量子效率,我们在MBE材料中发现了显着的电子扩散(从MOCVD材料中发生的空穴扩散反转),并且InGaAsn中的少数载体扩散不能通过“通用”,氮气 - 相关的缺陷。

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