Semiconductor nanowire array for transparent photovoltaic applications

The surface area of a building that could potentially be used for Building Integrated Photovoltaics would increase dramatically with the availability of transparent solar cells that could replace windows. The challenge is to capture energy from outside the visible region (UV or IR) while simultaneously allowing a high-quality observation of the outside world and transmitting sufficient light in the visible region to satisfactorily illuminate the interior of the building. In this paper, we show both computationally and experimentally that InP nanowire arrays can have good transparency in the visible region and high absorption in the near-infrared region. We show experimentally that we can achieve mean transparencies in the visible region of 65% and the radiative limit of more than 10% based on measured absorption and calculated emission. Our results demonstrate that nanowire arrays hold promise as a method to achieve transparent solar cells, which would fulfill the requirements to function as windows. In addition, we show that by optical design and by designing the geometry of nanowire arrays, solar cells can be achieved that absorb/transmit at wavelengths that are not decided by the bandgap of the material and that can be tailored to specific requirements such as colorful windows.

[1]  N. Anttu,et al.  Optical far-field extinction of a single GaAs nanowire towards in situ size control of aerotaxy nanowire growth , 2020, Nanotechnology.

[2]  Robert F. Shepherd,et al.  A transparent, self-healing and high-κ dielectric for low-field-emission stretchable optoelectronics , 2019, Nature Materials.

[3]  Huiyun Liu,et al.  Light-Emitting GaAs Nanowires on a Flexible Substrate. , 2018, Nano letters.

[4]  I. Åberg,et al.  Understanding InP Nanowire Array Solar Cell Performance by Nanoprobe-Enabled Single Nanowire Measurements. , 2018, Nano letters.

[5]  M. Steiner,et al.  Building a Six-Junction Inverted Metamorphic Concentrator Solar Cell , 2018, IEEE Journal of Photovoltaics.

[6]  Richard R. Lunt,et al.  Emergence of highly transparent photovoltaics for distributed applications , 2017 .

[7]  N. Anttu,et al.  Optical analysis of a III-V-nanowire-array-on-Si dual junction solar cell. , 2017, Optics express.

[8]  H. Pettersson,et al.  Considering Symmetry Properties of InP Nanowire/Light Incidence Systems to Gain Broadband Absorption , 2017, IEEE Photonics Journal.

[9]  Feng Liu,et al.  Efficient Semitransparent Solar Cells with High NIR Responsiveness Enabled by a Small‐Bandgap Electron Acceptor , 2017, Advanced materials.

[10]  M. Borgström,et al.  Absorption and transmission of light in III–V nanowire arrays for tandem solar cell applications , 2017, Nanotechnology.

[11]  J. Sun,et al.  Semi-transparent solar cells , 2017 .

[12]  M. Borgström,et al.  Towards high efficiency nanowire solar cells , 2017 .

[13]  A. Tiwari,et al.  High-efficiency inverted semi-transparent planar perovskite solar cells in substrate configuration , 2016, Nature Energy.

[14]  N. Anttu,et al.  Design for strong absorption in a nanowire array tandem solar cell , 2016, Scientific Reports.

[15]  Huiyun Liu,et al.  III–V nanowires and nanowire optoelectronic devices , 2015 .

[16]  Nicklas Anttu,et al.  Shockley-Queisser Detailed Balance Efficiency Limit for Nanowire Solar Cells , 2015 .

[17]  Young Tae Chae,et al.  Building energy performance evaluation of building integrated photovoltaic (BIPV) window with semi-transparent solar cells , 2014 .

[18]  Nalanie Mithraratne,et al.  Energy analysis of semi-transparent BIPV in Singapore buildings , 2013 .

[19]  R. LaPierre,et al.  III–V nanowire photovoltaics: Review of design for high efficiency , 2013 .

[20]  Hongqi Xu,et al.  Efficient light management in vertical nanowire arrays for photovoltaics. , 2013, Optics express.

[21]  Shawn Bourdo,et al.  Organic Solar Cells: A Review of Materials, Limitations, and Possibilities for Improvement , 2013 .

[22]  Chennupati Jagadish,et al.  Ultralow surface recombination velocity in InP nanowires probed by terahertz spectroscopy. , 2012, Nano letters.

[23]  Richard R. Lunt,et al.  Theoretical limits for visibly transparent photovoltaics , 2012 .

[24]  Gang Li,et al.  Visibly transparent polymer solar cells produced by solution processing. , 2012, ACS nano.

[25]  H. Xu,et al.  Colorful InAs nanowire arrays: from strong to weak absorption with geometrical tuning. , 2012, Nano letters.

[26]  Hongqi Xu,et al.  Scattering matrix method for optical excitation of surface plasmons in metal films with periodic arrays of subwavelength holes , 2011 .

[27]  Richard R. Lunt,et al.  Transparent, near-infrared organic photovoltaic solar cells for window and energy-scavenging applications , 2011 .

[28]  K. Emery,et al.  Proposed reference irradiance spectra for solar energy systems testing , 2002 .

[29]  B. Draine,et al.  Discrete-Dipole Approximation For Scattering Calculations , 1994 .