Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Sputtered indium tin oxide as a recombination layer formed on the tunnel oxide/poly-Si passivating contact enabling the potential of efficient monolithic perovskite/Si tandem solar cells

Journal Article · · Solar Energy Materials and Solar Cells
 [1];  [2];  [3];  [4];  [4];  [2];  [3];  [4];  [2]
  1. Naval Research Lab., Washington, DC (United States); Georgia Institute of Technology
  2. Naval Research Lab., Washington, DC (United States)
  3. Georgia Institute of Technology, Atlanta, GA (United States)
  4. Univ. of Toledo, OH (United States)
We focus on utilizing sputtered indium tin oxide (ITO) as a recombination layer, having low junction damage to an n-type silicon solar cell with a front-side tunnel oxide passivating electron contact, thereby enabling the development of a high efficiency monolithic perovskite/Si tandem device. High transparency and low resistivity ITO films are deposited via low power DC magnetron sputtering at room temperature onto a front-side thin SiOx/n+ poly-Si contact in a complete Cz n-Si cell with a back-side Al2O3/SiNx passivating boron-diffused p+-emitter on a random pyramid textured surface. We report the cell characteristics before and after ITO sputtering, and we find a cure at 250 °C in air is highly effective at mitigating any sputtering induced damage. Our ITO coated sample resulted in an implied open-circuit voltage (iVoc) of 684.7 ± 11.3 mV with the total saturation current density of 49.2 ± 14.8 fA/cm2, an implied fill factor (iFF) of 81.9 ± 0.8%, and a contact resistivity in the range of 60 mΩ-cm2 to 90 mΩ-cm2. After formation of a local Ag contact to the rear emitter and sputtered ITO film as the front-side contact without grid fingers, the pseudo-efficiency of 20.2 ± 0.5% was obtained with the Voc of 670.4 ± 7 mV and pseudo FF of 77.3 ± 1.3% under simulated one sun with the calculated short-circuit current density of 30.9 mA/cm2 from the measured external quantum efficiency. Furthermore, our modelling result shows that efficiency exceeding 25% under one sun is practically achievable in perovskite/Si tandem configuration using the ITO recombination layer connecting a perovskite top cell and a poly-Si bottom cell.
Research Organization:
Georgia Institute of Technology, Atlanta, GA (United States)
Sponsoring Organization:
Office of Naval Research; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
EE0007554
OSTI ID:
1893734
Alternate ID(s):
OSTI ID: 1893905
Journal Information:
Solar Energy Materials and Solar Cells, Journal Name: Solar Energy Materials and Solar Cells Vol. 210; ISSN 0927-0248
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

A Review of Inorganic Hole Transport Materials for Perovskite Solar Cells journal October 2018
Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction journal October 2017
Infrared Light Management Using a Nanocrystalline Silicon Oxide Interlayer in Monolithic Perovskite/Silicon Heterojunction Tandem Solar Cells with Efficiency above 25% journal February 2019
Monolithic Perovskite/Si Tandem Solar Cells: Pathways to Over 30% Efficiency journal April 2020
Band gap-voltage offset and energy production in next-generation multijunction solar cells journal November 2010
Large area tunnel oxide passivated rear contact n -type Si solar cells with 21.2% efficiency : Large area tunnel oxide passivated rear contact journal January 2016
Mass production of industrial tunnel oxide passivated contacts (i‐TOPCon) silicon solar cells with average efficiency over 23% and modules over 345 W journal July 2019
Solar cell efficiency tables (Version 55)
  • Green, Martin A.; Dunlop, Ewan D.; Hohl‐Ebinger, Jochen
  • Progress in Photovoltaics: Research and Applications, Vol. 28, Issue 1 https://doi.org/10.1002/pip.3228
journal December 2019
High and Low Work Function Materials for Passivated Contacts journal August 2015
Passivating/hole-selective contacts based on V2O5/SiOx stacks deposited at ambient temperature journal September 2017
Grain Engineering for Perovskite/Silicon Monolithic Tandem Solar Cells with Efficiency of 25.4% journal January 2019
Achieving a high open-circuit voltage in inverted wide-bandgap perovskite solar cells with a graded perovskite homojunction journal July 2019
The impact of indium tin oxide deposition and post annealing on the passivation property of TOPCon solar cells journal December 2018
Passivated rear contacts for high-efficiency n-type Si solar cells providing high interface passivation quality and excellent transport characteristics journal January 2014
Efficient carrier-selective p- and n-contacts for Si solar cells journal December 2014
A cost roadmap for silicon heterojunction solar cells journal April 2016
n-Type Si solar cells with passivating electron contact: Identifying sources for efficiency limitations by wafer thickness and resistivity variation journal December 2017
Laser contact openings for local poly-Si-metal contacts enabling 26.1%-efficient POLO-IBC solar cells journal November 2018
Implementing transparent conducting oxides by DC sputtering on ultrathin SiOx / poly-Si passivating contacts journal September 2019
Efficient Monolithic Perovskite/Silicon Tandem Solar Cell with Cell Area >1 cm 2 journal December 2015
Minimizing Current and Voltage Losses to Reach 25% Efficient Monolithic Two-Terminal Perovskite–Silicon Tandem Solar Cells journal August 2018
21.8% Efficient Monolithic Perovskite/Homo-Junction-Silicon Tandem Solar Cell on 16 cm 2 journal August 2018
25.1%-Efficient Monolithic Perovskite/Silicon Tandem Solar Cell Based on a p -type Monocrystalline Textured Silicon Wafer and High-Temperature Passivating Contacts journal March 2019
Silicon heterojunction solar cell with interdigitated back contacts for a photoconversion efficiency over 26% journal March 2017
23.6%-efficient monolithic perovskite/silicon tandem solar cells with improved stability journal February 2017
A new carbon phase with direct bandgap and high carrier mobility as electron transport material for perovskite solar cells journal January 2019
Efficient two-terminal all-perovskite tandem solar cells enabled by high-quality low-bandgap absorber layers journal November 2018
Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency journal June 2018
Monolithic perovskite/silicon-heterojunction tandem solar cells processed at low temperature journal January 2016
Monolithic perovskite/silicon-homojunction tandem solar cell with over 22% efficiency journal January 2017
Large area efficient interface layer free monolithic perovskite/homo-junction-silicon tandem solar cell with over 20% efficiency journal January 2018
Textured interfaces in monolithic perovskite/silicon tandem solar cells: advanced light management for improved efficiency and energy yield journal January 2018
Highly efficient monolithic perovskite silicon tandem solar cells: analyzing the influence of current mismatch on device performance journal January 2019
Contactless determination of current–voltage characteristics and minority‐carrier lifetimes in semiconductors from quasi‐steady‐state photoconductance data journal October 1996
Generalized analysis of quasi-steady-state and transient decay open circuit voltage measurements journal January 2002
Thermal stability of amorphous silicon/silicon nitride stacks for passivating crystalline silicon solar cells journal October 2008
Damage at hydrogenated amorphous/crystalline silicon interfaces by indium tin oxide overlayer sputtering journal October 2012
A 2-terminal perovskite/silicon multijunction solar cell enabled by a silicon tunnel junction journal March 2015
Zinc tin oxide as high-temperature stable recombination layer for mesoscopic perovskite/silicon monolithic tandem solar cells journal December 2016
Integrating transparent conductive oxides to improve the infrared response of silicon solar cells with passivating rear contacts conference January 2018
Passivating and low-resistive poly-Si tunneling junction enabling high-efficiency monolithic perovskite/silicon tandem solar cells journal October 2019
High quality ITO thin films grown by dc and RF sputtering without oxygen journal January 2010
Reassessment of the Limiting Efficiency for Crystalline Silicon Solar Cells journal October 2013
Recombination Analysis of Phosphorus-Doped Nanostructured Silicon Oxide Passivating Electron Contacts for Silicon Solar Cells journal March 2018
From PERC to Tandem: POLO- and p+/n+ Poly-Si Tunneling Junction as Interface Between Bottom and Top Cell journal January 2019
Low resistivity indium–tin oxide transparent conductive films. II. Effect of sputtering voltage on electrical property of films journal May 1990
Promises and challenges of perovskite solar cells journal November 2017
General transfer-matrix method for optical multilayer systems with coherent, partially coherent, and incoherent interference journal January 2002

Similar Records

High efficiency large area SnO/sub 2//n-Si and ITO/n-Si Heterojunction solar cells
Conference · Wed Sep 01 04:00:00 UTC 1982 · Conf. Rec. IEEE Photovoltaic Spec. Conf.; (United States) · OSTI ID:5391037

Modeling the potential of screen printed front junction CZ silicon solar cell with tunnel oxide passivated back contact
Journal Article · Tue Oct 04 00:00:00 UTC 2016 · Progress in Photovoltaics · OSTI ID:1893912