One-step, low-temperature deposited perovskite solar cell utilizing small molecule additive

Chen, Chun Chao; Hong, Zirou; Li, Gang; Chen, Qi; Zhou, Huanping; Yang, Yang

doi:10.1117/1.jpe.5.057405

Cited by 46 publications

(41 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They doped TiO x layer with Nb 5+ to enhance the carrier concentration in order to improve its conductivity. [ 120 ] Copyright 2015, Society of Photo-Optical Instrumentation Engineers. a) General organic-inorganic halide solar cell, which includes two optional layers that are not essential for high performance; an energy conversion effi ciency of over 15% has been reported for devices that have both optional layers, with only the scaffold layer infi ltrated by the perovskite (and then by the HTM) and without scaffolding; the structure then corresponds to a simple planar thin-fi lm cell.…”

Section: Electron Transport Materialsmentioning

confidence: 99%

The Progress of Interface Design in Perovskite‐Based Solar Cells

Fan

Huang

Wang

et al. 2016

Advanced Energy Materials

Self Cite

147

117

View full text Add to dashboard Cite

Figure 20. a) Modeled J − V characteristics of a perovskite device comprising ions but no traps. b) Modeled I -V characteristics of perovskite devices comprising ions and no traps for varying ion densities. c) Modeled J − V characteristics of perovskite device comprising ions and traps with varying ion mobility as indicated in the legend at a sweep rate of 100 kV s −1 . d) Modeled J -V characteristics of a perovskite device comprising ions and bulk traps. [ 211 ] 2015, American Chemical Society. e) Flow directions of the charged ion species in a Pb|MAPbI 3 |AgI |Ag cell under electrical bias. f) Images for surfaces A and B and g) a scanning electron microscope (SEM) image of surface B on the Pb pellet. h) The same cell confi guration to Figure 23 e. i) Images of each pellets after aging at 50 °C for a week in Ar atmosphere (no current stressing). Reproduced with permission. [ 212 ]

show abstract

Section: Electron Transport Materialsmentioning

confidence: 99%

The Progress of Interface Design in Perovskite‐Based Solar Cells

Fan

Huang

Wang

et al. 2016

Advanced Energy Materials

Self Cite

147

117

View full text Add to dashboard Cite

show abstract

“…Accordingly, efforts have been made to examine the crystallization kinetics. Firstly, the basic film processing parameters have been investigated by tuning the annealing temperature [20][21][22][23] and time [21], spin-coating rate [24], the atmospheric conditions [25,26], or by employing different solvents [22,27,28] or additives [29][30][31][32][33]. Secondly, the starting materials including inorganic lead source and organic ammonia salt have been found to determine the perovskite crystal growth kinetics, which in turn affects the film morphology and device performance [34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Controlled crystallization of CH3NH3PbI3 films for perovskite solar cells by various PbI2(X) complexes

Yan

Zhang

et al. 2016

Solar Energy Materials and Solar Cells

View full text Add to dashboard Cite

a b s t r a c tLead halide complexes are efficient precursors to obtain high quality perovskite films and high performance solar cells. However, how the lead halide complex affects the crystallization kinetics and thus the film quality of perovskite has not been systematically studied. Herein, two PbI 2 (X) complexes with different coordination strength of ligand X in complexation with PbI 2 (PbI 2 (DMF) and PbI 2 (DMSO)) are synthesized. The correlation between the morphology, evolution of the perovskite formation, defects state, carrier lifetime and the subsequent photovoltaic performance are investigated in details via a twostep coating method with various PbI 2 (X) complexes. We find that PbI 2 (DMSO) derived perovskite film shows larger grains and vertically oriented grain boundaries as well as enhanced photoluminescence intensity and longer carrier lifetime. As a result, highly efficient inverted planar perovskite solar cells with a power conversion efficiency up to 17.0% are achieved from PbI 2 (DMSO) complex under 1 sun illumination. This research could open up a new pathway to further improve the performance of perovskite solar cells through the control of perovskite crystallization kinetics by choosing proper PbI 2 (X) complex precursors.

show abstract

“…12,13 In order for perovskites enhanced properties to be successfully implemented into a range of applications, high quality thin films must be produced. Several deposition techniques including thermal evaporation, 14 single and two step spin coating 15,16 and vapor assisted processes 17 have been optimized to achieve high quality perovskite films for use in high performing PV devices. However, these laboratory based fabrication methods for perovskite films are not well-matched with a low costing, roll to roll process that is typical for large scale manufacture.…”

Section: Introductionmentioning

confidence: 99%

Understanding surface chemistry during MAPbI₃ spray deposition and its effect on photovoltaic performance

et al. 2017

View full text Add to dashboard Cite

aIn recent years there has been significant research into organic-inorganic halide perovskites for photovoltaic applications and has resulted in power conversion efficiencies greater than 20%. A number of deposition techniques have been utilized to produce high quality perovskite films including thermal evaporation, single and two-step spin coating and vapor assisted processes. However, these laboratory based fabrication methods are not well matched with low costing, roll to roll processing that is associated with large scale manufacture. In this work we use a low costing and rapid spray coating technique to fabricate solution processed MAPbI 3 films with controlled film thickness achieved through modifying concentration/spray volume. Investigation into the chemical composition and film morphology showed differing surface chemistries for the different film thicknesses, altering the surface morphology from large micro grained structures to small distorted grain arrangements. We have then implemented spray deposited films into solar devices (ITO/TiO 2 /MAPbI 3 /Au) and have studied the current density-voltage (JV) characteristics including light soaking effects. Through optimizing the absorber thickness the short-circuit current density is increased from 4.9 mA cm À2 to 22.3 mA cm À2, increasing overall power conversion efficiency by a factor 45. Investigation into the performance of devices under continued illumination showed an inverse relationship existed between low efficiency (thick) MAPbI 3 films and high efficiency (thin) MAPbI 3 films, where the former displayed large increases in overall performance compared to the rapid degradation in the latter. We attribute device instabilities to the increase in defect density as a consequence of the spray-induced surface chemistry, leading to trap assisted recombination at the back electrode.

show abstract

One-step, low-temperature deposited perovskite solar cell utilizing small molecule additive

Cited by 46 publications

References 18 publications

The Progress of Interface Design in Perovskite‐Based Solar Cells

The Progress of Interface Design in Perovskite‐Based Solar Cells

Controlled crystallization of CH3NH3PbI3 films for perovskite solar cells by various PbI2(X) complexes

Understanding surface chemistry during MAPbI₃ spray deposition and its effect on photovoltaic performance

Contact Info

Product

Resources

About

One-step, low-temperature deposited perovskite solar cell utilizing small molecule additive

Cited by 46 publications

References 18 publications

The Progress of Interface Design in Perovskite‐Based Solar Cells

The Progress of Interface Design in Perovskite‐Based Solar Cells

Controlled crystallization of CH3NH3PbI3 films for perovskite solar cells by various PbI2(X) complexes

Understanding surface chemistry during MAPbI3 spray deposition and its effect on photovoltaic performance

Contact Info

Product

Resources

About

Understanding surface chemistry during MAPbI₃ spray deposition and its effect on photovoltaic performance