long-wavelength inas/gaas quantum-dot light emitting sources monolithically grown on si substrate
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2015
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Abstract
Direct integration of III–V light emitting sources on Si substrates has attracted significant interest for addressing the growing limitations for Si-based electronics and allowing the realization of complex optoelectronics circuits. However, the high density of threading dislocations introduced by large lattice mismatch and incompatible thermal expansion coefficient between III–V materials and Si substrates have fundamentally limited monolithic epitaxy of III–V devices on Si substrates. Here, by using the InAlAs/GaAs strained layer superlattices (SLSs) as dislocation filter layers (DFLs) to reduce the density of threading dislocations. We firstly demonstrate a Si-based 1.3 µm InAs/GaAs quantum dot (QD) laser that lases up to 111 °C, with a low threshold current density of 200 A/cm2 and high output power over 100 mW at room temperature. We then demonstrate the operation of InAs/GaAs QD superluminescent light emitting diodes (SLDs) monolithically grown on Si substrates. The fabricated two-section SLD exhibits a 3 dB linewidth of 114 nm, centered at ～1255 nm with a corresponding output power of 2.6 mW at room temperature. Our work complements hybrid integration using wafer bonding and represents a significant milestone for direct monolithic integration of III–V light emitters on Si substrates.
| Reference Key |
chen2015photonicslong-wavelength
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| Authors | ;Siming Chen;Mingchu Tang;Jiang Wu;Qi Jiang;Vitaliy Dorogan;Mourad Benamara;Yuriy I. Mazur;Gregory J. Salamo;Huiyun Liu |
| Journal | pakistan journal of medical sciences |
| Year | 2015 |
| DOI |
10.3390/photonics2020646
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