Super-power photoelectric device for balancing thermal field distribution

平衡热场分布的超大功率光电器件

Abstract

一种平衡热场分布的超大功率光电器件,包括光电器件芯片,该芯片的外延层包括彼此隔离的若干单胞,该等单胞相互串联或并联,其中至少两个单胞相互并联形成至少一个单胞组,并且该至少一个单胞组还与该等单胞中其余的一个以上单胞和/或一个以上单胞组串联,其中每一单胞组内的所有单胞均排布在一个长宽比接近1的矩形区域内,而且各单胞的间距沿芯片周缘部向中心递增。本实用新型通过前述设计,可使相邻单胞节温保持一致,避免节温较高的单胞成为热斑和热崩,有效提升大功率光电器件的工作性能,并延长其使用寿命,同时还可使芯片中央区域有源区面积相对减少,产生热量减少,且使单胞间热的相互影响减少,从而达成芯片中央与四周热场的平衡分布。
A super-power photoelectric device for balancing thermal field distribution comprises a photoelectric device chip. An epitaxial layer of the chip comprises a plurality of unit cells which are separated, wherein the unit cells are connected in series or in parallel, at least two unit cells are connected in parallel to form at least one unit cell group, the at least one unit cell group is further connected with the rest more than one unit cell in the unit cells and/or more than one unit cell group in series, all of unit cells in each unit cell group are distributed in a rectangular region, the ratio of the length to the width of the rectangular region reaches to 1 approximately, and intervals of the unit cells gradually increase from the peripheral portion of the chip towards the center. By adopting the design, the node temperatures of adjacent unit cells can be kept to be consistent, the unit cells with high node temperature are prevented from becoming heat spots and heat collapses, the working performance of the super-power photoelectric device is effectively improved, and the service life of the super-power photoelectric device is prolonged. In addition, the area of an active region of a central region of the chip is relatively decreased, produced heat is decreased, mutual influence of heat of the unit cells is reduced, and accordingly balanced distribution of heat fields of the center and the periphery of the chip is achieved.

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    CN-103296181-ASeptember 11, 2013中国科学院苏州纳米技术与纳米仿生研究所Super-power photoelectric device for balancing thermal field distribution
    CN-103296181-BOctober 28, 2015中国科学院苏州纳米技术与纳米仿生研究所平衡热场分布的超大功率光电器件