Global Patent Index - EP 2291862 A2

EP 2291862 A2 20110309 - HETEROJUNCTION SOLAR CELL WITH ABSORBER HAVING AN INTEGRATED DOPING PROFILE

Title (en)

HETEROJUNCTION SOLAR CELL WITH ABSORBER HAVING AN INTEGRATED DOPING PROFILE

Title (de)

HETEROJUNCTION-SOLARZELLE MIT ABSORBER MIT INTEGRIERTEM DOTIERPROFIL

Title (fr)

CELLULE SOLAIRE À HÉTÉROJONCTION AVEC ABSORBEUR À PROFIL DE DOPAGE INTÉGRÉ

Publication

EP 2291862 A2 20110309 (DE)

Application

EP 09772416 A 20090630

Priority

  • EP 2009058148 W 20090630
  • DE 102008030693 A 20080701

Abstract (en)

[origin: WO2010000716A2] The invention relates to a heterojunction solar cell (1) and a method for the production thereof. The heterojunction solar cell has an absorber layer (3) made of silicon with a basic doping and at least one heterojunction layer (5, 7) of a doped semiconductor material whose band gap differs from that of the silicon of the absorber layer. The absorber layer (3) has a doped layer at an interface (13, 15) directed toward the heterojunction layer (5, 7), the doping concentration of said doped layer being greater than the basic doping concentration of the absorber layer. As a result of this doping profile, a field effect can be caused which prevents charge carrier pairs produced within the absorber layer from diffusing toward the interface between the absorber layer and the heterojunction layer and from recombining there.

IPC 8 full level

H01L 31/028 (2006.01); H01L 31/0376 (2006.01); H01L 31/0745 (2012.01)

CPC (source: EP US)

H01L 31/028 (2013.01 - EP US); H01L 31/03762 (2013.01 - EP US); H01L 31/0745 (2013.01 - EP US); H01L 31/0747 (2013.01 - EP US); Y02E 10/547 (2013.01 - EP US); Y02E 10/548 (2013.01 - EP US)

Citation (search report)

See references of WO 2010000716A2

Citation (examination)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

WO 2010000716 A2 20100107; WO 2010000716 A3 20100311; CN 102084491 A 20110601; DE 102008030693 A1 20100114; EP 2291862 A2 20110309; US 2011174374 A1 20110721

DOCDB simple family (application)

EP 2009058148 W 20090630; CN 200980125790 A 20090630; DE 102008030693 A 20080701; EP 09772416 A 20090630; US 200913002089 A 20090630