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Title: Acid additives enhancing the conductivity of spiro-OMeTAD toward high-efficiency and hysteresis-less planar perovskite solar cells

Journal Article · · Advanced Energy Materials
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Colorado School of Mines, Golden, CO (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)

A general doping strategy, using a wide range of acids with different pKa values as additive, is demonstrated to enhance the conductivity of spiro-OMeTAD, the dominant hole transport material in perovskite solar cells (PSCs). Here, hysteresis-less planar PSCs with ≈19% efficiency and better open-circuit voltage and fill factor is achieved with acid doped spiro-OMeTAD.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
AC36-08GO28308; DE‐AC36‐08‐GO28308
OSTI ID:
1345355
Alternate ID(s):
OSTI ID: 1401245
Report Number(s):
NREL/JA-5900-66721
Journal Information:
Advanced Energy Materials, Vol. 7, Issue 4; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 110 works
Citation information provided by
Web of Science

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Cited By (19)

In Situ Growth of 2D Perovskite Capping Layer for Stable and Efficient Perovskite Solar Cells journal February 2018
Unique Seamlessly Bonded CNT@Graphene Hybrid Nanostructure Introduced in an Interlayer for Efficient and Stable Perovskite Solar Cells journal June 2018
Retarding Thermal Degradation in Hybrid Perovskites by Ionic Liquid Additives journal April 2019
Highly Efficient Porphyrin-Based OPV/Perovskite Hybrid Solar Cells with Extended Photoresponse and High Fill Factor journal November 2017
Recent Advances in Spiro-MeOTAD Hole Transport Material and Its Applications in Organic-Inorganic Halide Perovskite Solar Cells journal October 2017
Fundamental Understanding of Photocurrent Hysteresis in Perovskite Solar Cells journal February 2019
Molecular Engineering of Copper Phthalocyanines: A Strategy in Developing Dopant-Free Hole-Transporting Materials for Efficient and Ambient-Stable Perovskite Solar Cells journal December 2018
LiTFSI‐Free Spiro‐OMeTAD‐Based Perovskite Solar Cells with Power Conversion Efficiencies Exceeding 19% journal July 2019
Self‐Assembly of Hybrid Oxidant POM@Cu‐BTC for Enhanced Efficiency and Long‐Term Stability of Perovskite Solar Cells journal October 2019
Self‐Assembly of Hybrid Oxidant POM@Cu‐BTC for Enhanced Efficiency and Long‐Term Stability of Perovskite Solar Cells journal December 2019
A Copper Coordination Polymer with Matching Energy Level for Modifying Hole Transport Layers to Improve the Performance of Perovskite Solar Cells journal May 2019
High‐Performance Perovskite Solar Cells Using Iodine as Effective Dopant for Spiro‐OMeTAD journal January 2020
Semitransparent CH 3 NH 3 PbI 3 Films Achieved by Solvent Engineering for Annealing- and Electron Transport Layer-Free Planar Perovskite Solar Cells journal March 2018
Improving the stability and decreasing the trap state density of mixed-cation perovskite solar cells through compositional engineering journal January 2018
Highly efficient perovskite solar cells based on a dopant-free conjugated DPP polymer hole transport layer: influence of solvent vapor annealing journal January 2018
Beneficial effects of potassium iodide incorporation on grain boundaries and interfaces of perovskite solar cells journal January 2019
Understanding macroscale functionality of metal halide perovskites in terms of nanoscale heterogeneities journal December 2018
Tailoring the Mesoscopic TiO2 Layer: Concomitant Parameters for Enabling High-Performance Perovskite Solar Cells journal January 2017
Hysteresis-free perovskite solar cells made of potassium-doped organometal halide perovskite journal September 2017