1992
DOI: 10.1149/1.2069311
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Etch Rates and Selectivities of Citric Acid/Hydrogen Peroxide on GaAs , Al0.3Ga0.7As , In0.2Ga0.8As , In0.53Ga0.47As , In0.52Al0.48As , and InP

Abstract: Etching studies involving citric acid/hydrogen peroxide false(C6H8O7:H2O2false) at volume ratios from 0.5:1 to 50:1 were found to provide good selective etching of various III‐V semiconductor materials grown on normalGaAs and normalInP substrates using molecular beam epitaxy. Both selective and uniform (nonselective) etching regions were found between these material systems by choosing different concentration volume ratios of citric acid/hydrogen peroxide false(χC6H8O7:1H2O2false) . Etchant selectiviti… Show more

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Cited by 155 publications
(44 citation statements)
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“…The TE-TM energy splitting is less than 50 µeV at k = 0, allowing the effective control of lasing polarization by optical pumping. (b) To determine the density-dependent spectral characteristics of PL in the InGaAs/GaAs MQWs, we measure the time-integrated and time-resolved PL in the sample, with the top DBR mirror layers removed, by selective wet etching [70]. PL spectra at P = 0.2 (blue), 0.6 (magenta), and 1 P th (green) in the absence of the top DBR mirrors.…”
Section: Discussionmentioning
confidence: 99%
“…The TE-TM energy splitting is less than 50 µeV at k = 0, allowing the effective control of lasing polarization by optical pumping. (b) To determine the density-dependent spectral characteristics of PL in the InGaAs/GaAs MQWs, we measure the time-integrated and time-resolved PL in the sample, with the top DBR mirror layers removed, by selective wet etching [70]. PL spectra at P = 0.2 (blue), 0.6 (magenta), and 1 P th (green) in the absence of the top DBR mirrors.…”
Section: Discussionmentioning
confidence: 99%
“…Аналіз отриманих результатів свідчить про домінуючий вплив стадії дифузії на загальну швидкість розчинення кристалів. Оскільки лінія залежності швидкості травлення InSb від швидкості перемішування розчину перетинає вісь ординат, це свідчить про змішаний механізм процесу розчинення [11]. Для підтвердження даних припущень були проведені додаткові дослідження впливу температурного фактору на швидкість взаємодії реагентів та визначено значення уявної енергії активації процесу (рис.…”
Section: вступunclassified
“…8 Selectivity study involving citric acid/hydrogen peroxide was also conducted for the GaAs-based and InP-based material systems. 9 The selectivity for GaAs/Al 0.3 Ga 0.7 As was 116. Citric acid/ammonium hydroxide/ hydrogen peroxide solution was used for selective etch of GaAs/ Al 0.22 Ga 0.78 As to obtain a selectivity of 200.…”
mentioning
confidence: 99%
“…There have been many efforts reported for the selective etch of III-V compound semiconductors. [8][9][10][11][12] The selectivity for GaAs/ Al 0.3 Ga 0.7 As was found to be 95 when the volume ratio of the citric acid/hydrogen peroxide etch solution was 10:1. 8 Selectivity study involving citric acid/hydrogen peroxide was also conducted for the GaAs-based and InP-based material systems.…”
mentioning
confidence: 99%