Riither, R. and Livingstone, J. (1994) Seasonal Variations in Amorphous Silicon Solar Module Outputs and Thin Film Characteristics. Solar Energy Materials & Solar Cells, 36, 29-43.
http://www.sciencedirect.com/science/article/pii/092702489400165O
http://dx.doi.org/10.1016/0927-0248(94)00165-O

has been cited by the following article:

• TITLE: High-Efficiency Solar Electricity of Umbrella by TRIZ Analysis

  AUTHORS: Jung-Hui Chao, Cheng-Yu Peng

  KEYWORDS: TRIZ, Electricity, Solar, Orientation, Umbrella

  JOURNAL NAME: Energy and Power Engineering, Vol.8 No.2, February 16, 2016

  ABSTRACT: This investigation presents the strategy of high-efficiency solar electricity of umbrella by TRIZ (Theory of Inventive Problem Solving) analysis. According to the combined statistics of classical and new contradiction matrix, the invention principles can be used for designing tracking irradiance of surface plane of umbrella orientations including tilted angle (θ) and azimuth angle (?). Three geographical sites are discussed by regions of Berlin, Taipei and Wellington located in north, near and south of tropic of cancer, respectively. The optimal design of azimuth surfaces of umbrella can be obtained by electricity gain at a fixed tilted angle.