公开(公告)号：US20170323993A1

公开(公告)日：2017-11-09

申请号：US15522238

申请日：2015-10-27

Applicant: Sol Voltaics AB

Inventor： Mikael BJÖRK ,  Jonas OHLSSON ,  Lars SAMUELSON ,  Erik SAUAR ,  Ingvar ÅBERG

IPC: H01L31/0687 ,  H01L31/05 ,  H01L31/032 ,  H01L31/0296 ,  H01L31/028 ,  H01L31/0224 ,  H01L31/02 ,  H01L31/0693 ,  H01L31/046

CPC classification number: H01L31/0687 ,  H01L31/0201 ,  H01L31/022433 ,  H01L31/02363 ,  H01L31/028 ,  H01L31/02966 ,  H01L31/0322 ,  H01L31/035227 ,  H01L31/03529 ,  H01L31/043 ,  H01L31/046 ,  H01L31/0504 ,  H01L31/0693 ,  H01L31/0725 ,  H01L31/078 ,  Y02E10/544

Abstract: A hybrid photovoltaic device (1) comprising a thin film solar cell (2) disposed in a first layer (21) comprising an array of vertically aligned nanowires (25), said nanowires having a junction with a first band gap corresponding to a first spectral range. The nanowires (25) form absorbing regions, and non-absorbing regions are formed between the nanowires. A bulk solar cell (3) s disposed in a second layer (31), positioned below the first layer (21), having a junction with a second band gap, which is smaller than said first band gap and corresponding to a second spectral range. The nanowires are provided in the first layer with a lateral density selected a such that a predetermined portion of an incident photonic wave-front will pass through the non-absorbing regions without absorption in the first spectral range, into the bulk solar cell for absorption in both the first spectral range and the second spectral range.

公开(公告)号：US20160155870A1

公开(公告)日：2016-06-02

申请号：US14896369

申请日：2014-06-05

Applicant: SOL VOLTAICS AB

Inventor： Ingvar ÅBERG ,  Jonas OHLSSON ,  Damir ASOLI ,  Nicklas ANTTU

IPC: H01L31/0352 ,  H01L31/18 ,  H01L31/0735 ,  H01L31/0224 ,  H01L31/0216

CPC classification number: H01L31/035281 ,  H01L31/02167 ,  H01L31/022466 ,  H01L31/035227 ,  H01L31/0693 ,  H01L31/0735 ,  H01L31/075 ,  H01L31/1852 ,  H01L31/1868 ,  H01L31/1884 ,  Y02E10/544 ,  Y02E10/548

Abstract: A solar cell structure (1) and a method of its fabrication, the structure comprising an array of elongated nanowires (2) made in a semiconductor material having a direct band gap. Each nanowire (2) has at least a first (3) and a second (4) sections. Said structure comprises a first electrode layer (7) realizing ohmic contact to at least one portion of each first section (3), a second, optically transparent electrode layer (8) realizing contact to at least one portion of each second section. Each nanowire (2) comprises a minority carrier barrier element (6) for minimizing recombination of minority carriers at the contact to the second electrode layer (8).

Abstract translation: 一种太阳能电池结构（1）及其制造方法，该结构包括由具有直接带隙的半导体材料制成的细长纳米线阵列（2）。 每个纳米线（2）至少具有第一（3）和第二（4）部分。 所述结构包括实现与每个第一部分（3）的至少一部分欧姆接触的第一电极层（7），实现与每个第二部分的至少一部分接触的第二光学透明电极层（8）。 每个纳米线（2）包括用于最小化与第二电极层（8）的接触处的少数载流子的复合的少数载流子势垒元件（6）。