High efficiency solar cells obtained from small size ingots with 30 cm Φ by controlling the distribution and orientation of dendrite crystals grown along the bottom of the ingots

K. Nakajima, K. Kutsukake, K. Fujiwara, N. Usami, S. Ono, Yamasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

We have obtained high-efficiency solar cells using 15.6 cm × 15.6 cm size wafers cut from small Si multicrystalline ingots with 30 cm Ø and the height of 7.5 cm, as well as those using 10 cm × 10 cm size wafers [1]. The ingots were grown by controlling the distribution and orientation of dendrite crystals grown along the bottom of the ingots, using the dendritic casting method. The conversion efficiency η of solar cells using the Si wafers was around 17.7 %, and the conversion efficiency was kept high and constant even in a large part (60% for more than η=17% and 80% for more than η=16%) of the small ingot. Therefore, we have made a plan to design and manufacture a large-scale equipment for industrial applications because much high efficiency and high yield can be expected using the large-scale equipment.

Original languageEnglish
Title of host publicationProgram - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Pages817-819
Number of pages3
DOIs
Publication statusPublished - 2010 Dec 20
Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI, United States
Duration: 2010 Jun 202010 Jun 25

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Other

Other35th IEEE Photovoltaic Specialists Conference, PVSC 2010
CountryUnited States
CityHonolulu, HI
Period10/6/2010/6/25

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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