Research progress on organic–inorganic halide perovskite materials and solar cells

Abstract

Owing to the intensive research efforts across the world since 2009, perovskite solar cell power conversion efficiencies (PCEs) are now comparable or even better than several other photovoltaic (PV) technologies. In this topical review article, we review recent progress in the field of organic-inorganic halide perovskite materials and solar cells. We associate these achievements with the fundamental knowledge gained in the perovskite research. The major recent advances in the fundamental perovskite material and solar cell research are highlighted, including the current efforts in visualizing the dynamical processes (in operando) taking place within a perovskite solar cell under operating conditions. We also discuss the existing technological challenges. Based on a survey of recently published works, we point out that to move the perovskite PV technology forward towards the next step of commercialization, what perovskite PV technology need the most in the coming next few years is not only further PCE enhancements, but also up-scaling, stability, and lead-toxicity. module. (d) Devices with metal grid help overcome the series resistance (Rseries). Certified efficiency (Newport, August 30 th , 2016) (a) Reprinted with permission from ref. [162].

Reducing Detrimental Defects for High‐Performance Metal Halide Perovskite Solar Cells

“…On the basis of these analyses, Cs 2 AgBiBr 6 double perovskite does not exhibit promising photovoltaic properties comparable to MAPbI 3 . This report emphasizes that not only light management (i.e., the band gap dependent J sc / J SQ where SQ is the Shockley‐Queisser limit) but also charge carrier management (( V oc ×FF)/( V SQ ×FF SQ ) or the electronic transport) causes the generally lower PCEs reported in lower‐dimensional (2D, 1D, and 0D) perovskites . Further research efforts are underway to understand better defect tolerance and its origin in perovskites, which may help predict other novel materials with defect tolerance properties as well as enhanced stability and minimal toxicity.…”

“…The situation is more complex when considering the influences of interfaces formed between perovskite and its adjacent layer (e.g., at the interface between TiO 2 and perovskite) . Therefore, characterization and control of defect formation and its concentration are of paramount importance for achieving reproducible high efficiency perovskite solar cells with large area and long‐term stability …”

“…Double‐sided PMMA passivated devices (P‐2 sides; Figure c) demonstrated much higher V oc than the corresponding non‐passivated devices (control) . The studies above suggest that to further increase PCE of PSCs, strategies to improve V oc and fill factor (FF) are needed, which can be achieved by defect passivation, because J sc values have almost reached its limits (see the discussion on carrier management versus light management) …”

Recent Progress of All‐Bromide Inorganic Perovskite Solar Cells

“…Interface‐related chemical reactions at perovskite/selective contacts have been proposed as one of the causes for the degradation of overall PSC performance . In addition, physico‐chemical degradation processes of selective contacts and electrodes are important to be considered when investigating operational stability of the whole CsPbBr 3 PSC (i.e., the PCE decay is a result from the degradation of the perovskite layer and its adjacent layers of selective contacts and electrodes) . In comparison with the organic–inorganic hybrid perovskites, the high temperature tolerance of CsPbBr 3 widens the material choice (selective contacts and/or electrodes) as well as its processing temperatures for subsequent depositions onto CsPbBr 3 films.…”

A Water-Stable Organic-Inorganic Hybrid Perovskite for Solar Cells by Inorganic Passivation

“…Although silicon-based solar cells have higher efficiency and much longer lifetime compared to PSCs, they require a costly industry to support the production of monocrystalline silicon. On the other hand, PSCs could be easily fabricated by low-cost steps such as spin-coating [3]. With simpler fabrication process and higher power/weight ratio, PSCs have a great potential to compete with the silicon solar cells in the near future [4].…”