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Title: Fast process flow, on-wafer interconnection and singulation for MEPV

Patent ·
OSTI ID:1341870

A method including providing a substrate comprising a device layer on which a plurality of device cells are defined; depositing a first dielectric layer on the device layer and metal interconnect such that the deposited interconnect is electrically connected to at least two of the device cells; depositing a second dielectric layer over the interconnect; and exposing at least one contact point on the interconnect through the second dielectric layer. An apparatus including a substrate having defined thereon a device layer including a plurality of device cells; a first dielectric layer disposed directly on the device layer; a plurality of metal interconnects, each of which is electrically connected to at least two of the device cells; and a second dielectric layer disposed over the first dielectric layer and over the interconnects, wherein the second dielectric layer is patterned in a positive or negative planar spring pattern.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
9,559,219
Application Number:
14/745,251
OSTI ID:
1341870
Resource Relation:
Patent File Date: 2015 Jun 19
Country of Publication:
United States
Language:
English

References (10)

Photovoltaic cell fabrication method and panel made thereby patent October 1989
Die singulation method and package formed thereby patent August 2012
Photovoltaic solar concentrator patent December 2012
Photovoltaic solar cell patent May 2014
Structured wafer for device processing patent May 2014
Structured wafer for device processing patent November 2014
Method of forming through substrate vias (TSVs) and singulating and releasing die having the TSVs from a mechanical support substrate patent December 2014
Photovoltaic solar cell patent September 2015
Array of small contacts for solar cell fabrication patent-application December 2008
A Method for Fabricating Pixelated Silicon Device Cells patent-application July 2015

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