Producing thin film photovoltaic modules with high integrity interconnects and dual layer contacts
- Lawrenceville, NJ
- Exton, PA
High performance photovoltaic modules are produced with improved interconnects by a special process. Advantageously, the photovoltaic modules have a dual layer back (rear) contact and a front contact with at least one layer. The front contact and the inner layer of the back contact can comprise a transparent conductive oxide. The outer layer of the back contact can comprise a metal or metal oxide. The front contact can also have a dielectric layer. In one form, the dual layer back contact comprises a zinc oxide inner layer and an aluminum outer layer and the front contact comprises a tin oxide inner layer and a silicon dioxide dielectric outer layer. One or more amorphous silicon-containing thin film semiconductors can be deposited between the front and back contacts. The contacts can be positioned between a substrate and an optional superstrate. During production, the transparent conductive oxide layer of the front contact is scribed by a laser, then the amorphous silicon-containing semiconductors and inner layer of the dual layer back contact are simultaneously scribed and trenched (drilled) by the laser and the trench is subsequently filled with the same metal as the outer layer of the dual layer back contact to provide a superb mechanical and electrical interconnect between the front contact and the outer layer of the dual layer back contact. The outer layer of the dual layer back contact can then be scribed by the laser. For enhanced environmental protection, the photovoltaic modules can be encapsulated.
- Research Organization:
- Midwest Research Institute, Kansas City, MO (United States)
- DOE Contract Number:
- AC36-83CH10093
- Assignee:
- BP Corporation North America Inc. (Chicago, IL)
- Patent Number(s):
- US 6288325
- OSTI ID:
- 873987
- Country of Publication:
- United States
- Language:
- English
Irreversible lightâenhanced degradation in amorphous silicon solar cells at elevated temperatures
|
journal | January 1996 |
Similar Records
Producing thin film photovoltaic modules with high integrity interconnects and dual layer contacts
Large-Area Triple-Junction a-Si Alloy Production Scaleup: Annual Subcontract Report, 17 March 1993 - 18 March 1994
Related Subjects
film
photovoltaic
modules
integrity
interconnects
dual
layer
contacts
performance
produced
improved
special
process
advantageously
rear
contact
front
inner
comprise
transparent
conductive
oxide
outer
metal
dielectric
form
comprises
zinc
aluminum
silicon
dioxide
amorphous
silicon-containing
semiconductors
deposited
positioned
substrate
optional
superstrate
production
scribed
laser
simultaneously
trenched
drilled
trench
subsequently
filled
provide
superb
mechanical
electrical
interconnect
enhanced
environmental
protection
encapsulated
photovoltaic modules
front contact
photovoltaic module
conductive oxide
dual layer
inner layer
outer layer
dielectric layer
zinc oxide
amorphous silicon
metal oxide
oxide layer
film photovoltaic
silicon dioxide
transparent conductive
subsequently filled
aluminum outer
film semiconductor
special process
performance photovoltaic
improved interconnects
integrity interconnects
electrical interconnect
layer contacts
/136/257/