Optoelectronics Letters

, Volume 9, Issue 3, pp 177–180

An AlxIn1−xAs/GaAs heterojunction ultra-thin film solar cell with 20% efficiency


DOI: 10.1007/s11801-013-2375-1

Cite this article as:
Haque, K.A.S.M.E. Optoelectron. Lett. (2013) 9: 177. doi:10.1007/s11801-013-2375-1


An ultra-thin film photovoltaic cell, which incorporates an AlxIn1−xAs/GaAs heterojunction, is simulated using Adept 1D simulation tool, and it is with an energy conversion efficiency of 20.06% (under 1 sun, AM1.5G illumination) for 604 nm cell thickness (excluding the substrate thickness), and optimized layer thickness and doping concentration for each layer of the device. The device has an n-type AlAs window layer (highly doped), an n-type AlxIn1−xAs emitter layer and a p-type GaAs base layer. Germanium (Ge) substrate is used for the structure. The device parameters are optimized separately for each layer. Based on these optimizations, the ultra-thin film solar cell design is proposed after careful consideration of lattice mismatch between two adjacent layers of the device.

Copyright information

© Tianjin University of Technology and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Electrical and Electronic EngineeringIslamic University of Technology Board BazarGazipurBangladesh