OHMIC CONTACT BETWEEN THIN FILM SOLAR CELL AND CARBON-BASED TRANSPARENT ELECTRODE

• Main Authors: SADANA, DEVENDRA, K, CHANDRA, BHUPESH, HONG, AUGUSTIN, J, KIM, JEEHWAN, TULEVSKI, GEORGE, S
• Format: Patent
• Language: English; French
• Published: 27.12.2012
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

A photovoltaic device and method include a photovoltaic stack having an N-doped layer (112), a P-doped layer (108) and an intrinsic layer (1 10). A transparent electrode (104) is formed on the photovoltaic stack and includes a carbon based layer (105) and a high work function metal layer (107). The high work function metal layer is disposed at an interface between the carbon based layer and the P-doped layer such that the high work function metal layer forms a reduced barrier contact and is light transmissive. L'invention concerne un dispositif photovoltaïque et un procédé associé, comprenant un empilement photovoltaïque pourvu d'une couche dopée N (112), d'une couche dopée P (108) et d'une couche intrinsèque (110). Une électrode transparente (104) est formée sur l'empilement photovoltaïque et comprend une couche à base de carbone (105) et une couche métallique à travail de sortie élevé (107). Cette dernière couche est disposée au niveau d'une interface entre la couche à base de carbone et la couche dopée P, de sorte à former un contact de barrière réduit et à transmettre la lumière.