Optimization of Phase-Engineered a-Si:H-Based Multi-Junction Solar Cells: Second Annual Technical Status Report, January 2003--January 2004

Research output: NRELSubcontract Report

Abstract

This subcontract report entails investigation of engineering improvements in the performance and stability of solar cells in a systematic way. It consists of the following four tasks: Task 1-Materials research and device development; Task 2-Process improvement directed by real-time diagnostics; Task 3-Device loss mechanisms; and Task 4-Characterization strategies for advanced materials. Thereal-time spectroscopic ellipsometry (RTSE) multichamber is near completion, and trial depositions with a-Si:H will begin shortly. Construction of the new dual beam photoconductivity (DBP) apparatus has been completed, and the new capabilities are being used in studies on a-Si:H thin films. A new apparatus is being constructed for in-depth studies on the mechanisms limiting the performance ofa-Si:H solar cells and the two track studies (cells and films) of the Staebler-Wronski Effect. The capabilities include the ability to integrate the cell characteristics including the quantum efficiency, at different temperatures on both p-i-n and n-i-p solar cells.
Original languageAmerican English
Number of pages78
StatePublished - 2004

Bibliographical note

Work performed by Pennsylvania State University, University Park, Pennsylvania

NREL Publication Number

  • NREL/SR-520-36695

Keywords

  • crystalline
  • current-voltage
  • density
  • devices
  • differential diode quality factor
  • dual-beam photoconductivity (DBP)
  • light-induced
  • photocurrent
  • PV
  • quasi-fermi splitting
  • real-time spectroscopic ellipsometry (RTSE)
  • solar cells
  • thermal annealing

Fingerprint

Dive into the research topics of 'Optimization of Phase-Engineered a-Si:H-Based Multi-Junction Solar Cells: Second Annual Technical Status Report, January 2003--January 2004'. Together they form a unique fingerprint.

Cite this