Van der Waals epitaxy of nearly single-crystalline nitride films on amorphous graphene-glass wafer.

Van der Waals epitaxy of nearly single-crystalline nitride films on amorphous graphene-glass wafer.
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DOI:
10.1126/sciadv.abf5011
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发表时间:
2021-07
期刊:
影响因子:
13.6
通讯作者:
Liu Z
Liu Z
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Ren F;Liu B;Chen Z;Yin Y;Sun J;Zhang S;Jiang B;Liu B;Liu Z;Wang J;Liang M;Yuan G;Yan J;Wei T;Yi X;Wang J;Zhang Y;Li J;Gao P;Liu Z;Liu Z

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The heteroepitaxy of nitride semiconductors can be achieved without needing lattice matching between two material systems. Van der Waals epitaxy provides a fertile playground for the monolithic integration of various materials for advanced electronics and optoelectronics. Here, a previously unidentified nanorod-assisted van der Waals epitaxy is developed and nearly single-crystalline GaN films are first grown on amorphous silica glass substrates using a graphene interfacial layer. The epitaxial GaN-based light-emitting diode structures, with a record internal quantum efficiency, can be readily lifted off, becoming large-size flexible devices. Without the effects of the potential field from a single-crystalline substrate, we expect this approach to be equally applicable for high-quality growth of nitrides on arbitrary substrates. Our work provides a revolutionary technology for the growth of high-quality semiconductors, thus enabling the hetero-integration of highly mismatched material systems.
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