New Thin Film CuGaSe2/Cu(In,Ga)Se2 Bifacial, Tandem Solar Cell with Both Junctions Formed Simultaneously

Research output: Contribution to conferencePaper

Abstract

Thin films of CuGaSe2 and Cu(In,Ga)Se2 were evaporated by the 3-stage process onto opposite sides of a single piece of soda-lime glass, coated bifacially with an n+/-TCO. Junctions were formed simultaneously with each of the p-type absorbers by depositing thin films of n-CdS via chemical bath deposition (CBD) at 60 ...deg..C. The resulting four-terminal device is a non-mechanically stacked,two-junction tandem. The unique growth sequence protects the temperature-sensitive p/n junctions. The initial device (h = 3.7%, Voc = 1.1 V [AM1.5]) suffered from low quantum efficiencies. Initial results are also presented from experiments with variations in growth sequence and back reflectors.
Original languageAmerican English
Number of pages7
StatePublished - 2002
Event29th IEEE PV Specialists Conference - New Orleans, Louisiana
Duration: 20 May 200224 May 2002

Conference

Conference29th IEEE PV Specialists Conference
CityNew Orleans, Louisiana
Period20/05/0224/05/02

Bibliographical note

Prepared for the 29th IEEE PV Specialists Conference, 20-24 May 2002, New Orleans, Louisiana

NREL Publication Number

  • NREL/CP-520-31440

Keywords

  • electron probe microanalysis (EPMA)
  • four-terminal device
  • high-temperature-sensitive layers
  • PV
  • scanning electron microscopy (SEM)
  • tandem solar cells
  • thin films
  • three-stage process

Fingerprint

Dive into the research topics of 'New Thin Film CuGaSe2/Cu(In,Ga)Se2 Bifacial, Tandem Solar Cell with Both Junctions Formed Simultaneously'. Together they form a unique fingerprint.

Cite this