Understanding the rate-dependent J–V hysteresis, slow time component, and aging in CH3NH3PbI3 perovskite solar cells: the role of a compensated electric field

In this work we show that the rate-dependent hysteresis seen in current–voltage scans of CH3NH3PbI3 perovskite solar cells is related to a slow field-induced process that tends to cancel the electric field in the device at each applied bias voltage. It is attributed to the build-up of space charge close to the contacts, independent of illumination and most likely due to ionic displacement, which is enhanced when the device undergoes aging. This process can also lead to a reduction of the open-circuit voltage or the steady-state photocurrent and does not directly correlate with the development of the hysteresis if it is measured at a fixed voltage sweep rate.

[1]  Kazuo Fueki,et al.  Ionic conduction of the perovskite-type halides , 1983 .

[2]  K. Kishio,et al.  Diffusion of oxide ion vacancies in perovskite-type oxides , 1988 .

[3]  Hiroshi Suga,et al.  Dielectric study of CH3NH3PbX3 (X = Cl, Br, I) , 1992 .

[4]  Gabi Friesen,et al.  Capacitance effects in high-efficiency cells , 1997 .

[5]  M. Maeda,et al.  Dielectric Studies on CH3NH3PbX3(X = Cl and Br) Single Cystals , 1997 .

[6]  Tsutomu Miyasaka,et al.  Organometal halide perovskites as visible-light sensitizers for photovoltaic cells. , 2009, Journal of the American Chemical Society.

[7]  Karl Leo,et al.  Influence of Hole‐Transport Layers and Donor Materials on Open‐Circuit Voltage and Shape of I–V Curves of Organic Solar Cells , 2011 .

[8]  Nam-Gyu Park,et al.  6.5% efficient perovskite quantum-dot-sensitized solar cell. , 2011, Nanoscale.

[9]  N. Park,et al.  Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9% , 2012, Scientific Reports.

[10]  J. Teuscher,et al.  Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites , 2012, Science.

[11]  Nam-Gyu Park,et al.  Organometal Perovskite Light Absorbers Toward a 20% Efficiency Low-Cost Solid-State Mesoscopic Solar Cell , 2013 .

[12]  Henry J. Snaith,et al.  Efficient planar heterojunction perovskite solar cells by vapour deposition , 2013, Nature.

[13]  Olle Inganäs,et al.  Simple experimental test to distinguish extraction and injection barriers at the electrodes of (organic) solar cells with S-shaped current–voltage characteristics , 2013 .

[14]  M. Grätzel,et al.  Sequential deposition as a route to high-performance perovskite-sensitized solar cells , 2013, Nature.

[15]  M. Grätzel,et al.  Title: Long-Range Balanced Electron and Hole Transport Lengths in Organic-Inorganic CH3NH3PbI3 , 2017 .

[16]  Karl Leo,et al.  Investigation of Driving Forces for Charge Extraction in Organic Solar Cells: Transient Photocurrent Measurements on Solar Cells Showing S‐Shaped Current–Voltage Characteristics , 2013 .

[17]  Laura M. Herz,et al.  Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber , 2013, Science.

[18]  Juan Bisquert,et al.  Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar Cells. , 2014, The journal of physical chemistry letters.

[19]  Yuanyuan Zhou,et al.  Direct Observation of Ferroelectric Domains in Solution-Processed CH3NH3PbI3 Perovskite Thin Films. , 2014, The journal of physical chemistry letters.

[20]  Peng Gao,et al.  Mixed-organic-cation perovskite photovoltaics for enhanced solar-light harvesting. , 2014, Angewandte Chemie.

[21]  Nakita K. Noel,et al.  Anomalous Hysteresis in Perovskite Solar Cells. , 2014, The journal of physical chemistry letters.

[22]  Yong Qiu,et al.  Study on the stability of CH3NH3PbI3films and the effect of post-modification by aluminum oxide in all-solid-state hybrid solar cells , 2014 .

[23]  Sung-Hoon Lee,et al.  The Role of Intrinsic Defects in Methylammonium Lead Iodide Perovskite. , 2014, The journal of physical chemistry letters.

[24]  J. Bisquert,et al.  Electrical field profile and doping in planar lead halide perovskite solar cells , 2014 .

[25]  Arie Zaban,et al.  Extremely Slow Photoconductivity Response of CH3NH3PbI3 Perovskites Suggesting Structural Changes under Working Conditions. , 2014, The journal of physical chemistry letters.

[26]  Eric T. Hoke,et al.  Hysteresis and transient behavior in current–voltage measurements of hybrid-perovskite absorber solar cells , 2014 .

[27]  Nam-Gyu Park,et al.  Parameters Affecting I-V Hysteresis of CH3NH3PbI3 Perovskite Solar Cells: Effects of Perovskite Crystal Size and Mesoporous TiO2 Layer. , 2014, The journal of physical chemistry letters.

[28]  W. Tress.  Organic Solar Cells , 2014 .

[29]  Mohammad Khaja Nazeeruddin,et al.  Real-space observation of unbalanced charge distribution inside a perovskite-sensitized solar cell , 2014, Nature Communications.

[30]  Yang Yang,et al.  Interface engineering of highly efficient perovskite solar cells , 2014, Science.

[31]  W. Tress.  Organic Solar Cells: Theory, Experiment, and Device Simulation , 2016 .

[32]  Juan Bisquert,et al.  Slow Dynamic Processes in Lead Halide Perovskite Solar Cells. Characteristic Times and Hysteresis. , 2014, The journal of physical chemistry letters.

[33]  Michael C. Heiber,et al.  Persistent photovoltage in methylammonium lead iodide perovskite solar cells , 2014, 1406.4276.

[34]  Sang Il Seok,et al.  Solvent engineering for high-performance inorganic-organic hybrid perovskite solar cells. , 2014, Nature materials.

[35]  Peng Gao,et al.  Impedance spectroscopic analysis of lead iodide perovskite-sensitized solid-state solar cells. , 2014, ACS nano.

[36]  Aron Walsh,et al.  Molecular ferroelectric contributions to anomalous hysteresis in hybrid perovskite solar cells , 2014, 1405.5810.

[37]  Mohammad Khaja Nazeeruddin,et al.  Predicting the Open‐Circuit Voltage of CH3NH3PbI3 Perovskite Solar Cells Using Electroluminescence and Photovoltaic Quantum Efficiency Spectra: the Role of Radiative and Non‐Radiative Recombination , 2015 .

[38]  Shenghao Wang,et al.  Temperature-dependent hysteresis effects in perovskite-based solar cells , 2015 .