Development of a new 550X concentrator module with 3J cells - Peformance and reliability

Kenji Araki, Hisafumi Uozumi, Michio Kondo, Tatsuya Takamoto, Takaaki Agui, Minoru Kaneiwa, Toshio Egami, Masao Hiramatsu, Yoshinori Miyazaki, Yoshishige Kemmoku, Atsushi Akisawa, H. S. Lee, N. J. Ekins-Daukes, Masafumi Yamaguchi

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


The status of the development of a new concentrator module in Japan is discussed based on three arguments, performance, reliability and cost. The peak uncorrected efficiency for a 7,056 cm2 400 X module with 36 solar cells connected in series was 26.6 % was measured in house. The peak uncorrected efficiencies of the same type of the module with 6 solar cells connected in series and 1,176 cm2 area measured by Fraunhofer ISE and NREL were 27.4 % and 24.8 % respectively. The peak uncorrected efficiency for a 550X and 5,445 cm2 module with 20 solar cells connected in series was 28.9 %. The temperature corrected efficiency under the best sunshine condition in Japan for the 550X module was 31.5 ±2 %. For reliability, some new degradation modes inherent to high concentration III-V solar cell system are discussed and a 20 year lifetime under concentrated flux exposure proven. The fail-safe issues of the concentrated sunlight are also discussed. For cost, the overall scenario for the reduction of material cost is discussed.

Original languageEnglish
Pages (from-to)631-634
Number of pages4
JournalConference Record of the IEEE Photovoltaic Specialists Conference
Publication statusPublished - 2005
Externally publishedYes
Event31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States
Duration: 2005 Jan 32005 Jan 7

ASJC Scopus subject areas

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


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