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Progress in three-terminal heterojunction bipolar transistor solar cells

Journal Article · · Progress in Photovoltaics
DOI:https://doi.org/10.1002/pip.3536· OSTI ID:1845667
 [1];  [1];  [1];  [2];  [1];  [1];  [1];  [2];  [2];  [1]
  1. Univ. Politecnica de Madrid (Spain). Instituto de Energía Solar
  2. National Renewable Energy Laboratory (NREL) Golden CO USA
Conventional solar cells, including multijunction solar cells, are based on pn junctions as building blocks. In contrast, the three-terminal heterojunction bipolar transistor solar cell (3T-HBTSC) explores the use of a bipolar transistor structure to build a solar cell. The limiting efficiency of this transistor structure equals that of a double-junction solar cell. However, since the 3T-HBTSC does not require tunnel junctions, its minimal structure has only three semiconductor layers, while the minimal structure of a double junction solar cell has six. This work reviews the operation principles of this solar cell and the steps carried out towards its practical implementation. Experimental results on a GaInP/GaAs HBTSC prototype with bottom interdigitated contacts are presented.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1845667
Alternate ID(s):
OSTI ID: 1874986
Report Number(s):
NREL/JA-5K00-80433; MainId:42636; UUID:ee2aca43-f935-43a8-aeb8-6ed5160d1f69; MainAdminID:25728
Journal Information:
Progress in Photovoltaics, Journal Name: Progress in Photovoltaics Journal Issue: 8 Vol. 30; ISSN 1062-7995
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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