# US 2012/0067417 A1 · Solar cell and method for manufacturing the same

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- Number: US 2012/0067417 A1
- Document ID: US20120067417A1
- Status: Published application
- Kind: A1
- Application number: 13/308,901
- Filed: 2011-12-01
- Published: 2012-03-22
- Earliest claimed: 2006-04-25
- Assignees: Namics Corporation; Sharp Kabushiki Kaisha
- Inventors: Tomohiro MACHIDA; Yoshifumi Tonomura; Akira Miyazawa; Keisuke Ohhira; Hideyo Iida; Toshiei Yamazaki
- Web page: https://patentgrep.com/patent/US20120067417A1

## CPC

- H10F 77/211: {for photovoltaic cells}
- C03C 8/02: Frit compositions, i.e. in a powdered or comminuted form
- C03C 8/10: containing lead
- C03C 8/14: Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
- C03C 8/16: with vehicle or suspending agents, e.g. slip
- C03C 8/18: containing free metals
- C03C 14/006: {the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material}
- H01B 1/22: the conductive material comprising metals or alloys
- C03C 2214/08: Metals
- C03C 2214/16: Microcrystallites, e.g. of optically or electrically active material
- H05K 1/092: {Dispersed materials, e.g. conductive pastes or inks}
- Y02E 10/50: Photovoltaic [PV] energy
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A solar cell containing an electrode, wherein the electrode is formed by firing a conductive paste, wherein the conductive paste includes an organic binder, a solvent, conductive particles, glass frits and a compound containing Al, Ga, In or Tl. A method for producing a solar cell by forming an electrode by firing a conductive paste, wherein the conductive paste includes an organic binder, a solvent, conductive particles, glass frits and a compound containing Al, Ga, In or Tl.

## Claims

### Claim 1

A solar cell comprising an electrode for solar cells,
wherein the electrode is formed by firing a conductive paste,
wherein the conductive paste comprises an organic binder, a solvent, conductive particles, glass frits and a compound containing Al, Ga, In or Tl.

### Claim 2 (depends on 1)

The solar cell according to claim 1, wherein the conductive paste is used to form an electrode on an N-type semiconductor.

### Claim 3 (depends on 1)

The solar cell according to claim 1, wherein the compound is an oxide, a hydroxide or an organometallic compound.

### Claim 4 (depends on 3)

The solar cell according to claim 3, wherein the organometallic compound is an acetylacetone metal complex, a metal acetoacetate complex, a diethylmalonic acid ester metal complex, a cyclopentadiene complex, a metal naphthenate compound, a metal octoate compound, a metal stearate compound and a metal palmitate compound.

### Claim 5 (depends on 1)

The solar cell according to claim 1, wherein the conductive paste further comprises zinc oxide, titanium oxide, tin oxide, copper oxide or nickel oxide.

### Claim 6

A method for producing a solar cell, the method comprising forming an electrode by firing a conductive paste,
wherein the conductive paste comprises an organic binder, a solvent, conductive particles, glass frits and a compound containing Al, Ga, In or Tl.