Abstract:
Ce procédé comporte les étapes : a) prévoir une structure comprenant : - un substrat (1) à base de silicium cristallin; - une première couche diélectrique (2), comprenant des atomes de bore, et formée sur la première surface (10) du substrat (1); - un film d'oxyde tunnel (3), formé sur la seconde surface (11) du substrat; - une couche de polysilicium (4), formée sur le film d'oxyde tunnel (3); - une deuxième couche diélectrique (5), comprenant des atomes de phosphore et/ou d'arsenic, et formée sur la couche de polysilicium (4); b) appliquer un traitement thermique à la structure de manière à : - diffuser les atomes de bore sous la première surface (10) du substrat (1), de manière à former une première région semi-conductrice dopée (100); - diffuser les atomes de phosphore et/ou d'arsenic dans la couche de polysilicium (4), de manière à doper la couche de polysilicium (4).
Abstract:
A method of producing a bifacial photovoltaic cell is disclosed herein, the method comprising: forming a boron-containing layer on a second surface of a semiconductor substrate; forming a cap layer above the boron-containing layer; effecting simultaneously: i) deposition on the first surface and ii) diffusion into it of the phosphorous using POCl 3 gas phase process and iii) diffusion of the boron into the second surface of the substrate, to thereby dope the first surface with n-dopant and the second surface with boron.
Abstract:
A method of producing a bifacial photovoltaic cell is disclosed herein, the method comprising: a) forming an n-dopant-containing layer on a first surface of a semiconductor substrate; b) forming a boron-containing layer on a second surface of the substrate by sputtering boron and/or by boron ion implantation; and c) effecting diffusion of the n-dopant and boron into the substrate, to dope the first surface with the n-dopant and the second surface with the boron. Further disclosed herein are bifacial photovoltaic cells, as well as photovoltaic modules, power plants and electric devices comprising said photovoltaic cells, comprising a semiconductor substrate, an n + layer on a first surface thereof and a boron-containing p + layer on a second surface thereof, wherein a variability of boron concentration in the p + layer is no more than 5%.
Abstract translation:本文公开了一种制造双面光伏电池的方法,所述方法包括:a)在半导体衬底的第一表面上形成含n-掺杂剂的层; b)通过溅射硼和/或通过硼离子注入在衬底的第二表面上形成含硼层; 和c)实现n型掺杂剂和硼扩散到衬底中,用n-掺杂剂掺杂第一表面,用硼掺杂第二表面。 本文进一步公开了双面光伏电池,以及包括所述光伏电池的光伏模块,发电厂和电子设备,其包括半导体衬底,在其第一表面上的n +层和含硼 其中第二表面上的p + p +层的硼浓度的变化不大于5%。p + / p +
Abstract:
A method for manufacturing a vertical power semiconductor device is provided, wherein a first impurity is provided at the first main side (103) of a semiconductor wafer (101). A first oxide layer (112) is formed on the first main side (103) of the wafer (101), wherein the first oxide layer (112) is partially doped with a second impurity in such way that any first portion of the first oxide layer (112) which is doped with the second impurity is spaced away from the semiconductor wafer by a second portion of the first oxide layer (112) which is not doped with the second impurity and which is disposed between the first portion of the first oxide layer (112) and the first main side (103) of the semiconductor wafer (101). Thereafter a carrier wafer (115) is bonded to the first oxide layer (112). During front-end-of-line processing on the second main side (102) of the semiconductor wafer (101), the second impurity is diffused from the first oxide layer (112) into the semiconductor wafer (101) from its first main side (103) by heat generated during the front-end-of-line processing.