Patent ID: 9219190
Filing Date: 2015-12-22
Classification: H01L

Abstract:
1. A method of manufacturing a single photon source die comprising: providing a precursor comprising a first semiconductor layer, a prep layer and a connecting layer, the prep layer and the connecting layer being formed on the first semiconductor layer successively; etching the connecting layer, the prep layer and a part of the first semiconductor layer to form a plurality of wedge structures and a surface defined on the first semiconductor and between the wedge structures; etching the wedge structures to form a plurality of columnar structures, each columnar structures having a flank; annealing a semi-finished product obtained from above; forming a middle layer on the surface of the first semiconductor layer and the flank of the each columnar structure; forming a second semiconductor layer on the columnar structures; and forming two electrodes on the second semiconductor layer and the first semiconductor layer respectively.