相較於傳統聚光型太陽能電池系統之體積龐大、組裝與對位容忍度低。本論文設計側聚光元件，並將太陽能電池晶片安置於聚光元件的側面，可使系統薄型化，提升組裝及對位容忍度，而適用於平板型產品。但因此類側聚光型系統之容忍角小，以致應用受限。
為了改善側聚光型太陽能電池系統之容忍角，本論文提出兩種類型之側聚光元件：第一類為V型溝槽結構之側聚光元件，第二類則為拋物面溝槽結構之側聚光元件。首先，使用光學軟體LightTools進行設計模擬，得第一類之側聚光元件容忍角為±4.5度；第二類之側聚光元件容忍角為±6.3度，容忍角較第一類側聚光元件提升了1.8度。接著，以V型溝槽結構作為聚光元件之底部反射結構，並實際製作出成品，再利用太陽光模擬器與太陽能電池分析儀進行實驗量測，以驗證此設計的可行性。而所測得的容忍角為±4.4度。最後，將實驗結果與模擬結果進行分析比較，以探討效率損失的原因。

Compared with the bulky volume and the low tolerance in alignment of conventional concentrated photovoltaic systems (CPVs), the design in this research with the solar cells placed at the both side walls of the planar solar concentrator (PSC), can be thin and has the enhanced tolerance of alignment. Although such a PSC can be used for flat products, its acceptance angle is around only ±2^°, and the application is limited.
In order to improve the acceptance angle of the planar solar concentrator (PSC). Two types of the planar solar concentrator (PSC) are purposed in this research. The first type uses the V-shape grooves, and the second type uses the parabolic grooves. First, we used LightTools to design and analyze the system. In simulation, the acceptance angles of the first and the second type have achieved ±〖4.5〗^° and ±〖6.3〗^°, respectively. Experimentally, the PSC with the V-shape grooves as the bottom reflective surface was fabricated. After the designed sample was fabricated by CNC machining, we used the solar simulator and the solar module analyzer in the measurement to verify this design. The factors between experimental result, and simulation result, were then analyzed, while the acceptance angle achieved the value of ±〖4.4〗^°.

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